Vulnerability-Lookup

FKIE_CVE-2024-47696

Vulnerability from fkie_nvd - Published: 2024-10-21 12:15 - Updated: 2026-08-04 11:20

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency In the commit aee2424246f9 ("RDMA/iwcm: Fix a use-after-free related to destroying CM IDs"), the function flush_workqueue is invoked to flush the work queue iwcm_wq. But at that time, the work queue iwcm_wq was created via the function alloc_ordered_workqueue without the flag WQ_MEM_RECLAIM. Because the current process is trying to flush the whole iwcm_wq, if iwcm_wq doesn't have the flag WQ_MEM_RECLAIM, verify that the current process is not reclaiming memory or running on a workqueue which doesn't have the flag WQ_MEM_RECLAIM as that can break forward-progress guarantee leading to a deadlock. The call trace is as below: [ 125.350876][ T1430] Call Trace: [ 125.356281][ T1430] <TASK> [ 125.361285][ T1430] ? __warn (kernel/panic.c:693) [ 125.367640][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9)) [ 125.375689][ T1430] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 125.382505][ T1430] ? handle_bug (arch/x86/kernel/traps.c:239) [ 125.388987][ T1430] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) [ 125.395831][ T1430] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 125.403125][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9)) [ 125.410984][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9)) [ 125.418764][ T1430] __flush_workqueue (kernel/workqueue.c:3970) [ 125.426021][ T1430] ? __pfx___might_resched (kernel/sched/core.c:10151) [ 125.433431][ T1430] ? destroy_cm_id (drivers/infiniband/core/iwcm.c:375) iw_cm [ 125.441209][ T1430] ? __pfx___flush_workqueue (kernel/workqueue.c:3910) [ 125.473900][ T1430] ? _raw_spin_lock_irqsave (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) [ 125.473909][ T1430] ? __pfx__raw_spin_lock_irqsave (kernel/locking/spinlock.c:161) [ 125.482537][ T1430] _destroy_id (drivers/infiniband/core/cma.c:2044) rdma_cm [ 125.495072][ T1430] nvme_rdma_free_queue (drivers/nvme/host/rdma.c:656 drivers/nvme/host/rdma.c:650) nvme_rdma [ 125.505827][ T1430] nvme_rdma_reset_ctrl_work (drivers/nvme/host/rdma.c:2180) nvme_rdma [ 125.505831][ T1430] process_one_work (kernel/workqueue.c:3231) [ 125.515122][ T1430] worker_thread (kernel/workqueue.c:3306 kernel/workqueue.c:3393) [ 125.515127][ T1430] ? __pfx_worker_thread (kernel/workqueue.c:3339) [ 125.531837][ T1430] kthread (kernel/kthread.c:389) [ 125.539864][ T1430] ? __pfx_kthread (kernel/kthread.c:342) [ 125.550628][ T1430] ret_from_fork (arch/x86/kernel/process.c:147) [ 125.558840][ T1430] ? __pfx_kthread (kernel/kthread.c:342) [ 125.558844][ T1430] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) [ 125.566487][ T1430] </TASK> [ 125.566488][ T1430] ---[ end trace 0000000000000000 ]---

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/29b3bbd912b8db86df7a3c180b910ccb621f5635
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2efe8da2ddbf873385b4bc55366d09350b408df6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/86dfdd8288907f03c18b7fb462e0e232c4f98d89	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8b7df76356d098f85f3bd2c7cf6fb43f531893d7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a09dc967b3c58899e259c0aea092f421d22a0b04	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a64f30db12bdc937c5108158d98c8eab1925c548	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/da0392698c62397c19deb1b9e9bdf2fbb5a9420e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/da2708a19f45b4a7278adf523837c8db21d1e2b5
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-265688.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-355557.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "da2708a19f45b4a7278adf523837c8db21d1e2b5",
              "status": "affected",
              "version": "d91d253c87fd1efece521ff2612078a35af673c6",
              "versionType": "git"
            },
            {
              "lessThan": "29b3bbd912b8db86df7a3c180b910ccb621f5635",
              "status": "affected",
              "version": "7f25f296fc9bd0435be14e89bf657cd615a23574",
              "versionType": "git"
            },
            {
              "lessThan": "2efe8da2ddbf873385b4bc55366d09350b408df6",
              "status": "affected",
              "version": "94ee7ff99b87435ec63211f632918dc7f44dac79",
              "versionType": "git"
            },
            {
              "lessThan": "da0392698c62397c19deb1b9e9bdf2fbb5a9420e",
              "status": "affected",
              "version": "557d035fe88d78dd51664f4dc0e1896c04c97cf6",
              "versionType": "git"
            },
            {
              "lessThan": "a64f30db12bdc937c5108158d98c8eab1925c548",
              "status": "affected",
              "version": "dc8074b8901caabb97c2d353abd6b4e7fa5a59a5",
              "versionType": "git"
            },
            {
              "lessThan": "8b7df76356d098f85f3bd2c7cf6fb43f531893d7",
              "status": "affected",
              "version": "ff5bbbdee08287d75d72e65b72a2b76d9637892a",
              "versionType": "git"
            },
            {
              "lessThan": "c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58",
              "status": "affected",
              "version": "ee39384ee787e86e9db4efb843818ef0ea9cb8ae",
              "versionType": "git"
            },
            {
              "lessThan": "a09dc967b3c58899e259c0aea092f421d22a0b04",
              "status": "affected",
              "version": "aee2424246f9f1dadc33faa78990c1e2eb7826e4",
              "versionType": "git"
            },
            {
              "lessThan": "86dfdd8288907f03c18b7fb462e0e232c4f98d89",
              "status": "affected",
              "version": "aee2424246f9f1dadc33faa78990c1e2eb7826e4",
              "versionType": "git"
            },
            {
              "lessThan": "4.19.323",
              "status": "affected",
              "version": "4.19.320",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.285",
              "status": "affected",
              "version": "5.4.282",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.227",
              "status": "affected",
              "version": "5.10.224",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.168",
              "status": "affected",
              "version": "5.15.165",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.113",
              "status": "affected",
              "version": "6.1.103",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.54",
              "status": "affected",
              "version": "6.6.44",
              "versionType": "semver"
            },
            {
              "lessThan": "6.10.13",
              "status": "affected",
              "version": "6.10.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "RUGGEDCOM RST2428P",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F09E537F-AD7C-4CDD-94C7-982AB40F0250",
              "versionEndExcluding": "5.4",
              "versionStartIncluding": "4.19.320",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90BDC6BE-7108-4153-B444-9458B801A490",
              "versionEndExcluding": "5.10",
              "versionStartIncluding": "5.4.282",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7E8BD058-58ED-4814-A074-86C0143050D0",
              "versionEndExcluding": "5.10.227",
              "versionStartIncluding": "5.10.224",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7C1D9631-2FF8-491B-B364-0C17573AE285",
              "versionEndExcluding": "5.15.168",
              "versionStartIncluding": "5.15.165",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B972EDA4-04F8-4699-8D9D-A5DC02BE8618",
              "versionEndExcluding": "6.1.113",
              "versionStartIncluding": "6.1.103",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "120EDEE6-5DF3-41B7-B899-A20906FEC9A6",
              "versionEndExcluding": "6.6.54",
              "versionStartIncluding": "6.6.44",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6C8722B8-BE3E-4B88-AA44-E3441523B260",
              "versionEndExcluding": "6.10.13",
              "versionStartIncluding": "6.10.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AB755D26-97F4-43B6-8604-CD076811E181",
              "versionEndExcluding": "6.11.2",
              "versionStartIncluding": "6.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency\n\nIn the commit aee2424246f9 (\"RDMA/iwcm: Fix a use-after-free related to\ndestroying CM IDs\"), the function flush_workqueue is invoked to flush the\nwork queue iwcm_wq.\n\nBut at that time, the work queue iwcm_wq was created via the function\nalloc_ordered_workqueue without the flag WQ_MEM_RECLAIM.\n\nBecause the current process is trying to flush the whole iwcm_wq, if\niwcm_wq doesn\u0027t have the flag WQ_MEM_RECLAIM, verify that the current\nprocess is not reclaiming memory or running on a workqueue which doesn\u0027t\nhave the flag WQ_MEM_RECLAIM as that can break forward-progress guarantee\nleading to a deadlock.\n\nThe call trace is as below:\n\n[  125.350876][ T1430] Call Trace:\n[  125.356281][ T1430]  \u003cTASK\u003e\n[ 125.361285][ T1430] ? __warn (kernel/panic.c:693)\n[ 125.367640][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.375689][ T1430] ? report_bug (lib/bug.c:180 lib/bug.c:219)\n[ 125.382505][ T1430] ? handle_bug (arch/x86/kernel/traps.c:239)\n[ 125.388987][ T1430] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\n[ 125.395831][ T1430] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)\n[ 125.403125][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.410984][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.418764][ T1430] __flush_workqueue (kernel/workqueue.c:3970)\n[ 125.426021][ T1430] ? __pfx___might_resched (kernel/sched/core.c:10151)\n[ 125.433431][ T1430] ? destroy_cm_id (drivers/infiniband/core/iwcm.c:375) iw_cm\n[ 125.441209][ T1430] ? __pfx___flush_workqueue (kernel/workqueue.c:3910)\n[ 125.473900][ T1430] ? _raw_spin_lock_irqsave (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162)\n[ 125.473909][ T1430] ? __pfx__raw_spin_lock_irqsave (kernel/locking/spinlock.c:161)\n[ 125.482537][ T1430] _destroy_id (drivers/infiniband/core/cma.c:2044) rdma_cm\n[ 125.495072][ T1430] nvme_rdma_free_queue (drivers/nvme/host/rdma.c:656 drivers/nvme/host/rdma.c:650) nvme_rdma\n[ 125.505827][ T1430] nvme_rdma_reset_ctrl_work (drivers/nvme/host/rdma.c:2180) nvme_rdma\n[ 125.505831][ T1430] process_one_work (kernel/workqueue.c:3231)\n[ 125.515122][ T1430] worker_thread (kernel/workqueue.c:3306 kernel/workqueue.c:3393)\n[ 125.515127][ T1430] ? __pfx_worker_thread (kernel/workqueue.c:3339)\n[ 125.531837][ T1430] kthread (kernel/kthread.c:389)\n[ 125.539864][ T1430] ? __pfx_kthread (kernel/kthread.c:342)\n[ 125.550628][ T1430] ret_from_fork (arch/x86/kernel/process.c:147)\n[ 125.558840][ T1430] ? __pfx_kthread (kernel/kthread.c:342)\n[ 125.558844][ T1430] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)\n[  125.566487][ T1430]  \u003c/TASK\u003e\n[  125.566488][ T1430] ---[ end trace 0000000000000000 ]---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency En el commit aee2424246f9 (\"RDMA/iwcm: Fix a use-after-free related to destroying CM IDs\"), se invoca la funci\u00f3n flush_workqueue para vaciar la cola de trabajo iwcm_wq. Pero en ese momento, la cola de trabajo iwcm_wq se cre\u00f3 a trav\u00e9s de la funci\u00f3n alloc_ordered_workqueue sin el indicador WQ_MEM_RECLAIM. Debido a que el proceso actual est\u00e1 intentando vaciar todo iwcm_wq, si iwcm_wq no tiene el indicador WQ_MEM_RECLAIM, verifique que el proceso actual no est\u00e9 recuperando memoria o ejecut\u00e1ndose en una cola de trabajo que no tenga el indicador WQ_MEM_RECLAIM, ya que eso puede romper la garant\u00eda de progreso hacia adelante y provocar un bloqueo. El seguimiento de la llamada es el siguiente: [ 125.350876][ T1430] Seguimiento de la llamada: [ 125.356281][ T1430]  [ 125.361285][ T1430] ? __warn (kernel/panic.c:693) [ 125.367640][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9)) [ 125.375689][ T1430] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 125.382505][ T1430] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminador 1)) [ 125.395831][ T1430] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 125.403125][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminador 9)) [ 125.410984][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminador 9)) [ 125.418764][ T1430] __flush_workqueue (kernel/workqueue.c:3970) [ 125.426021][ T1430] ? __pfx___might_resched (kernel/sched/core.c:10151) [ 125.433431][ T1430] ? destroy_cm_id (drivers/infiniband/core/iwcm.c:375) iw_cm [ 125.441209][ T1430] ? __pfx___flush_workqueue (kernel/workqueue.c:3910) [ 125.473900][ T1430] ? _raw_spin_lock_irqsave (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) [ 125.473909][ T1430] ? __pfx__raw_spin_lock_irqsave (n\u00facleo/bloqueo/spinlock.c:161) [ 125.482537][ T1430] _destroy_id (controladores/infiniband/core/cma.c:2044) rdma_cm [ 125.495072][ T1430] nvme_rdma_free_queue (controladores/nvme/host/rdma.c:656 controladores/nvme/host/rdma.c:650) nvme_rdma [ 125.505827][ T1430] nvme_rdma_reset_ctrl_work (controladores/nvme/host/rdma.c:2180) nvme_rdma [ 125.505831][ T1430] proceso_uno_trabajo (kernel/workqueue.c:3231) [ 125.515122][ T1430] subproceso_de_trabajo (kernel/workqueue.c:3306 kernel/workqueue.c:3393) [ 125.515127][ T1430] ? __pfx_subproceso_de_trabajo (kernel/workqueue.c:3339) [ 125.531837][ T1430] subproceso_de_trabajo (kernel/kthread.c:389) [ 125.539864][ T1430] ? __pfx_kthread (kernel/kthread.c:342) [ 125.550628][ T1430] ret_from_fork (arch/x86/kernel/process.c:147) [ 125.558840][ T1430] ? __pfx_kthread (kernel/kthread.c:342) [ 125.558844][ T1430] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) [ 125.566487][ T1430]  [ 125.566488][ T1430] ---[ fin de seguimiento 000000000000000 ]---"
    }
  ],
  "id": "CVE-2024-47696",
  "lastModified": "2026-08-04T11:20:40.683",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-47696",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-21T13:05:12.849051Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-10-21T12:15:06.257",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/29b3bbd912b8db86df7a3c180b910ccb621f5635"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2efe8da2ddbf873385b4bc55366d09350b408df6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/86dfdd8288907f03c18b7fb462e0e232c4f98d89"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8b7df76356d098f85f3bd2c7cf6fb43f531893d7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a09dc967b3c58899e259c0aea092f421d22a0b04"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a64f30db12bdc937c5108158d98c8eab1925c548"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/da0392698c62397c19deb1b9e9bdf2fbb5a9420e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da2708a19f45b4a7278adf523837c8db21d1e2b5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-47696 (GCVE-0-2024-47696)

Vulnerability from cvelistv5 – Published: 2024-10-21 11:53 – Updated: 2026-08-05 11:39

Title

RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-21 13:05 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6665 records in the last 180 days details

References

13 references

URL	Tags
https://git.kernel.org/stable/c/da2708a19f45b4a72…
https://git.kernel.org/stable/c/29b3bbd912b8db86d…
https://git.kernel.org/stable/c/2efe8da2ddbf87338…
https://git.kernel.org/stable/c/da0392698c62397c1…
https://git.kernel.org/stable/c/a64f30db12bdc937c…
https://git.kernel.org/stable/c/8b7df76356d098f85…
https://git.kernel.org/stable/c/c8b18a75282cfd278…
https://git.kernel.org/stable/c/a09dc967b3c58899e…
https://git.kernel.org/stable/c/86dfdd8288907f03c…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

6 products

Vendor	Product	Version
Linux	Linux	Affected: d91d253c87fd1efece521ff2612078a35af673c6 , < da2708a19f45b4a7278adf523837c8db21d1e2b5 (git) Affected: 7f25f296fc9bd0435be14e89bf657cd615a23574 , < 29b3bbd912b8db86df7a3c180b910ccb621f5635 (git) Affected: 94ee7ff99b87435ec63211f632918dc7f44dac79 , < 2efe8da2ddbf873385b4bc55366d09350b408df6 (git) Affected: 557d035fe88d78dd51664f4dc0e1896c04c97cf6 , < da0392698c62397c19deb1b9e9bdf2fbb5a9420e (git) Affected: dc8074b8901caabb97c2d353abd6b4e7fa5a59a5 , < a64f30db12bdc937c5108158d98c8eab1925c548 (git) Affected: ff5bbbdee08287d75d72e65b72a2b76d9637892a , < 8b7df76356d098f85f3bd2c7cf6fb43f531893d7 (git) Affected: ee39384ee787e86e9db4efb843818ef0ea9cb8ae , < c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58 (git) Affected: aee2424246f9f1dadc33faa78990c1e2eb7826e4 , < a09dc967b3c58899e259c0aea092f421d22a0b04 (git) Affected: aee2424246f9f1dadc33faa78990c1e2eb7826e4 , < 86dfdd8288907f03c18b7fb462e0e232c4f98d89 (git) Affected: 4.19.320 , < 4.19.323 (semver) Affected: 5.4.282 , < 5.4.285 (semver) Affected: 5.10.224 , < 5.10.227 (semver) Affected: 5.15.165 , < 5.15.168 (semver) Affected: 6.1.103 , < 6.1.113 (semver) Affected: 6.6.44 , < 6.6.54 (semver) Affected: 6.10.3 , < 6.10.13 (semver)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (semver) Unaffected: 5.4.285 , ≤ 5.4.* (semver) Unaffected: 5.10.227 , ≤ 5.10.* (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.54 , ≤ 6.6.* (semver) Unaffected: 6.10.13 , ≤ 6.10.* (semver) Unaffected: 6.11.2 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Siemens	RUGGEDCOM RST2428P	Affected: 0 , < V3.2 (custom)
Siemens	SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Affected: 0 , < V3.2 (custom)
Siemens	SCALANCE XCM-/XRM-/XCH-/XRH-300 family	Affected: 0 , < V3.2 (custom)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-47696",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-21T13:05:12.849051Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-21T13:14:14.398Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:21:01.362Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "RUGGEDCOM RST2428P",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.2",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T11:58:14.517Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "da2708a19f45b4a7278adf523837c8db21d1e2b5",
              "status": "affected",
              "version": "d91d253c87fd1efece521ff2612078a35af673c6",
              "versionType": "git"
            },
            {
              "lessThan": "29b3bbd912b8db86df7a3c180b910ccb621f5635",
              "status": "affected",
              "version": "7f25f296fc9bd0435be14e89bf657cd615a23574",
              "versionType": "git"
            },
            {
              "lessThan": "2efe8da2ddbf873385b4bc55366d09350b408df6",
              "status": "affected",
              "version": "94ee7ff99b87435ec63211f632918dc7f44dac79",
              "versionType": "git"
            },
            {
              "lessThan": "da0392698c62397c19deb1b9e9bdf2fbb5a9420e",
              "status": "affected",
              "version": "557d035fe88d78dd51664f4dc0e1896c04c97cf6",
              "versionType": "git"
            },
            {
              "lessThan": "a64f30db12bdc937c5108158d98c8eab1925c548",
              "status": "affected",
              "version": "dc8074b8901caabb97c2d353abd6b4e7fa5a59a5",
              "versionType": "git"
            },
            {
              "lessThan": "8b7df76356d098f85f3bd2c7cf6fb43f531893d7",
              "status": "affected",
              "version": "ff5bbbdee08287d75d72e65b72a2b76d9637892a",
              "versionType": "git"
            },
            {
              "lessThan": "c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58",
              "status": "affected",
              "version": "ee39384ee787e86e9db4efb843818ef0ea9cb8ae",
              "versionType": "git"
            },
            {
              "lessThan": "a09dc967b3c58899e259c0aea092f421d22a0b04",
              "status": "affected",
              "version": "aee2424246f9f1dadc33faa78990c1e2eb7826e4",
              "versionType": "git"
            },
            {
              "lessThan": "86dfdd8288907f03c18b7fb462e0e232c4f98d89",
              "status": "affected",
              "version": "aee2424246f9f1dadc33faa78990c1e2eb7826e4",
              "versionType": "git"
            },
            {
              "lessThan": "4.19.323",
              "status": "affected",
              "version": "4.19.320",
              "versionType": "semver"
            },
            {
              "lessThan": "5.4.285",
              "status": "affected",
              "version": "5.4.282",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.227",
              "status": "affected",
              "version": "5.10.224",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.168",
              "status": "affected",
              "version": "5.15.165",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.113",
              "status": "affected",
              "version": "6.1.103",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.54",
              "status": "affected",
              "version": "6.6.44",
              "versionType": "semver"
            },
            {
              "lessThan": "6.10.13",
              "status": "affected",
              "version": "6.10.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/iwcm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.323",
                  "versionStartIncluding": "4.19.320",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.285",
                  "versionStartIncluding": "5.4.282",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.227",
                  "versionStartIncluding": "5.10.224",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.168",
                  "versionStartIncluding": "5.15.165",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.113",
                  "versionStartIncluding": "6.1.103",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.54",
                  "versionStartIncluding": "6.6.44",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.13",
                  "versionStartIncluding": "6.10.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.2",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency\n\nIn the commit aee2424246f9 (\"RDMA/iwcm: Fix a use-after-free related to\ndestroying CM IDs\"), the function flush_workqueue is invoked to flush the\nwork queue iwcm_wq.\n\nBut at that time, the work queue iwcm_wq was created via the function\nalloc_ordered_workqueue without the flag WQ_MEM_RECLAIM.\n\nBecause the current process is trying to flush the whole iwcm_wq, if\niwcm_wq doesn\u0027t have the flag WQ_MEM_RECLAIM, verify that the current\nprocess is not reclaiming memory or running on a workqueue which doesn\u0027t\nhave the flag WQ_MEM_RECLAIM as that can break forward-progress guarantee\nleading to a deadlock.\n\nThe call trace is as below:\n\n[  125.350876][ T1430] Call Trace:\n[  125.356281][ T1430]  \u003cTASK\u003e\n[ 125.361285][ T1430] ? __warn (kernel/panic.c:693)\n[ 125.367640][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.375689][ T1430] ? report_bug (lib/bug.c:180 lib/bug.c:219)\n[ 125.382505][ T1430] ? handle_bug (arch/x86/kernel/traps.c:239)\n[ 125.388987][ T1430] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1))\n[ 125.395831][ T1430] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)\n[ 125.403125][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.410984][ T1430] ? check_flush_dependency (kernel/workqueue.c:3706 (discriminator 9))\n[ 125.418764][ T1430] __flush_workqueue (kernel/workqueue.c:3970)\n[ 125.426021][ T1430] ? __pfx___might_resched (kernel/sched/core.c:10151)\n[ 125.433431][ T1430] ? destroy_cm_id (drivers/infiniband/core/iwcm.c:375) iw_cm\n[ 125.441209][ T1430] ? __pfx___flush_workqueue (kernel/workqueue.c:3910)\n[ 125.473900][ T1430] ? _raw_spin_lock_irqsave (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162)\n[ 125.473909][ T1430] ? __pfx__raw_spin_lock_irqsave (kernel/locking/spinlock.c:161)\n[ 125.482537][ T1430] _destroy_id (drivers/infiniband/core/cma.c:2044) rdma_cm\n[ 125.495072][ T1430] nvme_rdma_free_queue (drivers/nvme/host/rdma.c:656 drivers/nvme/host/rdma.c:650) nvme_rdma\n[ 125.505827][ T1430] nvme_rdma_reset_ctrl_work (drivers/nvme/host/rdma.c:2180) nvme_rdma\n[ 125.505831][ T1430] process_one_work (kernel/workqueue.c:3231)\n[ 125.515122][ T1430] worker_thread (kernel/workqueue.c:3306 kernel/workqueue.c:3393)\n[ 125.515127][ T1430] ? __pfx_worker_thread (kernel/workqueue.c:3339)\n[ 125.531837][ T1430] kthread (kernel/kthread.c:389)\n[ 125.539864][ T1430] ? __pfx_kthread (kernel/kthread.c:342)\n[ 125.550628][ T1430] ret_from_fork (arch/x86/kernel/process.c:147)\n[ 125.558840][ T1430] ? __pfx_kthread (kernel/kthread.c:342)\n[ 125.558844][ T1430] ret_from_fork_asm (arch/x86/entry/entry_64.S:257)\n[  125.566487][ T1430]  \u003c/TASK\u003e\n[  125.566488][ T1430] ---[ end trace 0000000000000000 ]---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The most severe reasonable path is the in-kernel NVMe-oF target over iWARP: a remote initiator\u0027s CM connect-failure or disconnect queues `nvmet_rdma_release_queue_work` on `nvmet_wq` (WQ_MEM_RECLAIM), which reaches `rdma_destroy_id` \u2192 `iw_destroy_cm_id` \u2192 `flush_workqueue(iwcm_wq)`; the nvme-rdma host path is likewise driven by remote transport events from the peer.\nAC:L - The attacker drives both sides \u2014 repeated connect/abrupt-disconnect cycles reliably leave an in-flight iwcm event holding a cm_id reference, which is exactly the condition under which `iw_destroy_cm_id()` performs the flush, and attempts can be retried without limit.\nPR:N - The nvmet-rdma queue setup/teardown path runs entirely at the RDMA CM layer, before NVMe host-NQN access control or in-band authentication, so an unauthenticated remote peer that can reach the target port triggers it.\nUI:N - Triggered wholly by attacker-initiated RDMA CM connection and disconnection events; no action by any local user or administrator is required.\nS:U - The warning and the potential workqueue deadlock are confined to the kernel that owns the affected workqueues; no security authority boundary such as a VM or IOMMU domain is crossed.\nC:N - The flush itself is functionally correct \u2014 only the WQ_MEM_RECLAIM annotation was missing \u2014 so there is no memory corruption, out-of-bounds read, or attacker-observable data disclosure.\nI:N - No kernel or user data is modified; the defect is a workqueue forward-progress annotation, giving the attacker no write primitive of any kind.\nA:H - `check_flush_dependency()` raises a WARN that panics outright on the widely deployed `panic_on_warn=1` configuration, and the underlying condition it flags is a genuine deadlock \u2014 a memory-reclaim worker blocking forever on a rescuer-less workqueue, stalling `nvmet-wq`/`nvme-reset-wq`/`rdma_cm` under memory pressure."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:39:29.355Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/da2708a19f45b4a7278adf523837c8db21d1e2b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/29b3bbd912b8db86df7a3c180b910ccb621f5635"
        },
        {
          "url": "https://git.kernel.org/stable/c/2efe8da2ddbf873385b4bc55366d09350b408df6"
        },
        {
          "url": "https://git.kernel.org/stable/c/da0392698c62397c19deb1b9e9bdf2fbb5a9420e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a64f30db12bdc937c5108158d98c8eab1925c548"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b7df76356d098f85f3bd2c7cf6fb43f531893d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8b18a75282cfd27822a8cc3c1f005c1ac8d1a58"
        },
        {
          "url": "https://git.kernel.org/stable/c/a09dc967b3c58899e259c0aea092f421d22a0b04"
        },
        {
          "url": "https://git.kernel.org/stable/c/86dfdd8288907f03c18b7fb462e0e232c4f98d89"
        }
      ],
      "title": "RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-47696",
    "datePublished": "2024-10-21T11:53:33.950Z",
    "dateReserved": "2024-09-30T16:00:12.942Z",
    "dateUpdated": "2026-08-05T11:39:29.355Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted