CVE-2022-48925 (GCVE-0-2022-48925)

Vulnerability from cvelistv5 – Published: 2024-08-22 01:33 – Updated: 2026-08-05 08:52
VLAI
Title
RDMA/cma: Do not change route.addr.src_addr outside state checks
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cma: Do not change route.addr.src_addr outside state checks If the state is not idle then resolve_prepare_src() should immediately fail and no change to global state should happen. However, it unconditionally overwrites the src_addr trying to build a temporary any address. For instance if the state is already RDMA_CM_LISTEN then this will corrupt the src_addr and would cause the test in cma_cancel_operation(): if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev) Which would manifest as this trace from syzkaller: BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26 Read of size 8 at addr ffff8881546491e0 by task syz-executor.1/32204 CPU: 1 PID: 32204 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232 __kasan_report mm/kasan/report.c:399 [inline] kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416 __list_add_valid+0x93/0xa0 lib/list_debug.c:26 __list_add include/linux/list.h:67 [inline] list_add_tail include/linux/list.h:100 [inline] cma_listen_on_all drivers/infiniband/core/cma.c:2557 [inline] rdma_listen+0x787/0xe00 drivers/infiniband/core/cma.c:3751 ucma_listen+0x16a/0x210 drivers/infiniband/core/ucma.c:1102 ucma_write+0x259/0x350 drivers/infiniband/core/ucma.c:1732 vfs_write+0x28e/0xa30 fs/read_write.c:603 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae This is indicating that an rdma_id_private was destroyed without doing cma_cancel_listens(). Instead of trying to re-use the src_addr memory to indirectly create an any address derived from the dst build one explicitly on the stack and bind to that as any other normal flow would do. rdma_bind_addr() will copy it over the src_addr once it knows the state is valid. This is similar to commit bc0bdc5afaa7 ("RDMA/cma: Do not change route.addr.src_addr.ss_family")
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:33 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 732d41c545bb359cbb8c94698bdc1f8bcf82279c , < 5b1cef5798b4fd6e4fd5522e7b8a26248beeacaa (git)
Affected: 732d41c545bb359cbb8c94698bdc1f8bcf82279c , < 00265efbd3e5705038c9492a434fda8cf960c8a2 (git)
Affected: 732d41c545bb359cbb8c94698bdc1f8bcf82279c , < d350724795c7a48b05bf921d94699fbfecf7da0b (git)
Affected: 732d41c545bb359cbb8c94698bdc1f8bcf82279c , < 22e9f71072fa605cbf033158db58e0790101928d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.103 , ≤ 5.10.* (semver)
Unaffected: 5.15.26 , ≤ 5.15.* (semver)
Unaffected: 5.16.12 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Do not change route.addr.src_addr outside state checks\n\nIf the state is not idle then resolve_prepare_src() should immediately\nfail and no change to global state should happen. However, it\nunconditionally overwrites the src_addr trying to build a temporary any\naddress.\n\nFor instance if the state is already RDMA_CM_LISTEN then this will corrupt\nthe src_addr and would cause the test in cma_cancel_operation():\n\n           if (cma_any_addr(cma_src_addr(id_priv)) \u0026\u0026 !id_priv-\u003ecma_dev)\n\nWhich would manifest as this trace from syzkaller:\n\n  BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26\n  Read of size 8 at addr ffff8881546491e0 by task syz-executor.1/32204\n\n  CPU: 1 PID: 32204 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n  Call Trace:\n   __dump_stack lib/dump_stack.c:79 [inline]\n   dump_stack+0x141/0x1d7 lib/dump_stack.c:120\n   print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232\n   __kasan_report mm/kasan/report.c:399 [inline]\n   kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416\n   __list_add_valid+0x93/0xa0 lib/list_debug.c:26\n   __list_add include/linux/list.h:67 [inline]\n   list_add_tail include/linux/list.h:100 [inline]\n   cma_listen_on_all drivers/infiniband/core/cma.c:2557 [inline]\n   rdma_listen+0x787/0xe00 drivers/infiniband/core/cma.c:3751\n   ucma_listen+0x16a/0x210 drivers/infiniband/core/ucma.c:1102\n   ucma_write+0x259/0x350 drivers/infiniband/core/ucma.c:1732\n   vfs_write+0x28e/0xa30 fs/read_write.c:603\n   ksys_write+0x1ee/0x250 fs/read_write.c:658\n   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThis is indicating that an rdma_id_private was destroyed without doing\ncma_cancel_listens().\n\nInstead of trying to re-use the src_addr memory to indirectly create an\nany address derived from the dst build one explicitly on the stack and\nbind to that as any other normal flow would do. rdma_bind_addr() will copy\nit over the src_addr once it knows the state is valid.\n\nThis is similar to commit bc0bdc5afaa7 (\"RDMA/cma: Do not change\nroute.addr.src_addr.ss_family\")"
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            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: RDMA/cma: no cambie route.addr.src_addr fuera de las comprobaciones de estado. Si el estado no est\u00e1 inactivo, resolve_prepare_src() deber\u00eda fallar inmediatamente y no deber\u00eda ocurrir ning\u00fan cambio en el estado global. Sin embargo, sobrescribe incondicionalmente src_addr al intentar crear una direcci\u00f3n temporal. Por ejemplo, si el estado ya es RDMA_CM_LISTEN, esto da\u00f1ar\u00e1 src_addr y provocar\u00e1 la prueba en cma_cancel_operation(): if (cma_any_addr(cma_src_addr(id_priv)) \u0026amp;\u0026amp; !id_priv-\u0026gt;cma_dev) Lo que se manifestar\u00eda como este rastro de syzkaller: ERROR : KASAN: use-after-free en __list_add_valid+0x93/0xa0 lib/list_debug.c:26 Lectura de tama\u00f1o 8 en addr ffff8881546491e0 por tarea syz-executor.1/32204 CPU: 1 PID: 32204 Comm: syz-executor.1 No contaminado 5.12.0-rc8-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:79 [en l\u00ednea] dump_stack+0x141/0x1d7 lib /dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232 __kasan_report mm/kasan/report.c:399 [en l\u00ednea] kasan_report.cold+0x7c/0xd8 mm/kasan/ report.c:416 __list_add_valid+0x93/0xa0 lib/list_debug.c:26 __list_add include/linux/list.h:67 [en l\u00ednea] list_add_tail include/linux/list.h:100 [en l\u00ednea] cma_listen_on_all drivers/infiniband/core/ cma.c:2557 [en l\u00ednea] rdma_listen+0x787/0xe00 controladores/infiniband/core/cma.c:3751 ucma_listen+0x16a/0x210 controladores/infiniband/core/ucma.c:1102 ucma_write+0x259/0x350 controladores/infiniband/core /ucma.c:1732 vfs_write+0x28e/0xa30 fs/read_write.c:603 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 Entry_SYSCALL_64_after_hwframe+0x44/ 0xae Esto indica que un rdma_id_private fue destruido sin realizar cma_cancel_listens(). En lugar de intentar reutilizar la memoria src_addr para crear indirectamente cualquier direcci\u00f3n derivada del dst, cree una expl\u00edcitamente en la pila y vinc\u00falela como lo har\u00eda cualquier otro flujo normal. rdma_bind_addr() lo copiar\u00e1 sobre src_addr una vez que sepa que el estado es v\u00e1lido. Esto es similar al commit bc0bdc5afaa7 (\"RDMA/cma: No cambiar route.addr.src_addr.ss_family\")"
          }
        ],
        "id": "CVE-2022-48925",
        "lastModified": "2026-08-04T10:17:26.740",
        "metrics": {
          "cvssMetricV31": [
            {
              "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
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                "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": [
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              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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                "options": [
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                  },
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                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:33:15.605399Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-08-22T02:15:08.750",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/00265efbd3e5705038c9492a434fda8cf960c8a2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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          },
          {
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            "url": "https://git.kernel.org/stable/c/5b1cef5798b4fd6e4fd5522e7b8a26248beeacaa"
          },
          {
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            "url": "https://git.kernel.org/stable/c/d350724795c7a48b05bf921d94699fbfecf7da0b"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:48:13+00:00",
      "cve": "CVE-2022-48925",
      "id": "CVE-2022-48925",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/cma: Do not change route.addr.src_addr outside state checks",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48925.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-48925",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-10T15:33:15.605399Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
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              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-11T12:42:15.678Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/infiniband/core/cma.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "5b1cef5798b4fd6e4fd5522e7b8a26248beeacaa",
                  "status": "affected",
                  "version": "732d41c545bb359cbb8c94698bdc1f8bcf82279c",
                  "versionType": "git"
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                {
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                {
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                  "status": "affected",
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                  "versionType": "git"
                },
                {
                  "lessThan": "22e9f71072fa605cbf033158db58e0790101928d",
                  "status": "affected",
                  "version": "732d41c545bb359cbb8c94698bdc1f8bcf82279c",
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              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/infiniband/core/cma.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                  "status": "affected",
                  "version": "5.10"
                },
                {
                  "lessThan": "5.10",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
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                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.103",
                  "versionType": "semver"
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                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.26",
                  "versionType": "semver"
                },
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                  "status": "unaffected",
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                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.17",
                  "versionType": "original_commit_for_fix"
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              ]
            }
          ],
          "cpeApplicability": [
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              "nodes": [
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                  "cpeMatch": [
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                      "versionEndExcluding": "5.10.103",
                      "versionStartIncluding": "5.10",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.26",
                      "versionStartIncluding": "5.10",
                      "vulnerable": true
                    },
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                  "negate": false,
                  "operator": "OR"
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cma: Do not change route.addr.src_addr outside state checks\n\nIf the state is not idle then resolve_prepare_src() should immediately\nfail and no change to global state should happen. However, it\nunconditionally overwrites the src_addr trying to build a temporary any\naddress.\n\nFor instance if the state is already RDMA_CM_LISTEN then this will corrupt\nthe src_addr and would cause the test in cma_cancel_operation():\n\n           if (cma_any_addr(cma_src_addr(id_priv)) \u0026\u0026 !id_priv-\u003ecma_dev)\n\nWhich would manifest as this trace from syzkaller:\n\n  BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26\n  Read of size 8 at addr ffff8881546491e0 by task syz-executor.1/32204\n\n  CPU: 1 PID: 32204 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n  Call Trace:\n   __dump_stack lib/dump_stack.c:79 [inline]\n   dump_stack+0x141/0x1d7 lib/dump_stack.c:120\n   print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232\n   __kasan_report mm/kasan/report.c:399 [inline]\n   kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416\n   __list_add_valid+0x93/0xa0 lib/list_debug.c:26\n   __list_add include/linux/list.h:67 [inline]\n   list_add_tail include/linux/list.h:100 [inline]\n   cma_listen_on_all drivers/infiniband/core/cma.c:2557 [inline]\n   rdma_listen+0x787/0xe00 drivers/infiniband/core/cma.c:3751\n   ucma_listen+0x16a/0x210 drivers/infiniband/core/ucma.c:1102\n   ucma_write+0x259/0x350 drivers/infiniband/core/ucma.c:1732\n   vfs_write+0x28e/0xa30 fs/read_write.c:603\n   ksys_write+0x1ee/0x250 fs/read_write.c:658\n   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThis is indicating that an rdma_id_private was destroyed without doing\ncma_cancel_listens().\n\nInstead of trying to re-use the src_addr memory to indirectly create an\nany address derived from the dst build one explicitly on the stack and\nbind to that as any other normal flow would do. rdma_bind_addr() will copy\nit over the src_addr once it knows the state is valid.\n\nThis is similar to commit bc0bdc5afaa7 (\"RDMA/cma: Do not change\nroute.addr.src_addr.ss_family\")"
            }
          ],
          "metrics": [
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              "cvssV3_1": {
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                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The vulnerability is reached only through local writes to /dev/infiniband/rdma_cm (ucma_write \u2192 ucma_resolve_ip/ucma_listen \u2192 rdma_resolve_addr/rdma_listen), not via remote packet processing.\nAC:L - Exploitation is a deterministic sequence of RDMA CM commands (create \u2192 resolve \u2192 listen \u2192 resolve with empty src family) fully controlled by the attacker; syzkaller reproduces it with a single process and no race.\nPR:L - The rdma_cm misc device is mode 0666 and create/listen/resolve require no capabilities, so an unprivileged local user can open the device and trigger the bug.\nUI:N - The attacker performs all RDMA CM operations themselves; no victim action is required.\nS:U - Impact is confined to the local kernel (UAF leading to privilege escalation); it does not cross a VM/IOMMU or other security authority boundary.\nC:H - The bug leaves a freed rdma_id_private on the global listen_any_list (kmalloc-2k UAF), which can be reclaimed and read to disclose kernel memory.\nI:H - The same list UAF is heap-controllable and can be turned into arbitrary write / control-flow hijacking primitives in the kernel.\nA:H - The UAF reliably corrupts kernel list state and causes kernel oops/panic (KASAN use-after-free in rdma_listen), fully denying availability."
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            "dateUpdated": "2026-08-05T08:52:56.980Z",
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        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48925",
        "datePublished": "2024-08-22T01:33:11.172Z",
        "dateReserved": "2024-08-21T06:06:23.296Z",
        "dateUpdated": "2026-08-05T08:52:56.980Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
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    }
  }
}



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