CVE-2023-53629 (GCVE-0-2023-53629)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-08-05 09:15
VLAI
Title
fs: dlm: fix use after free in midcomms commit
Summary
In the Linux kernel, the following vulnerability has been resolved: fs: dlm: fix use after free in midcomms commit While working on processing dlm message in softirq context I experienced the following KASAN use-after-free warning: [ 151.760477] ================================================================== [ 151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347 [ 151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828 [ 151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014 [ 151.768726] Call Trace: [ 151.769277] <TASK> [ 151.769748] dump_stack_lvl+0x5b/0x86 [ 151.770556] print_report+0x180/0x4c8 [ 151.771378] ? kasan_complete_mode_report_info+0x7c/0x1e0 [ 151.772241] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.773069] kasan_report+0x93/0x1a0 [ 151.773668] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.774514] __asan_load4+0x7e/0xa0 [ 151.775089] dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.775890] ? create_message.isra.29.constprop.64+0x57/0xc0 [ 151.776770] send_common+0x19f/0x1b0 [ 151.777342] ? remove_from_waiters+0x60/0x60 [ 151.778017] ? lock_downgrade+0x410/0x410 [ 151.778648] ? __this_cpu_preempt_check+0x13/0x20 [ 151.779421] ? rcu_lockdep_current_cpu_online+0x88/0xc0 [ 151.780292] _convert_lock+0x46/0x150 [ 151.780893] convert_lock+0x7b/0xc0 [ 151.781459] dlm_lock+0x3ac/0x580 [ 151.781993] ? 0xffffffffc0540000 [ 151.782522] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.783379] ? dlm_scan_rsbs+0xa70/0xa70 [ 151.784003] ? preempt_count_sub+0xd6/0x130 [ 151.784661] ? is_module_address+0x47/0x70 [ 151.785309] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.786166] ? 0xffffffffc0540000 [ 151.786693] ? lockdep_init_map_type+0xc3/0x360 [ 151.787414] ? 0xffffffffc0540000 [ 151.787947] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.789004] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.789858] ? 0xffffffffc0540000 [ 151.790392] ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture] [ 151.791347] ? delay_tsc+0x94/0xc0 [ 151.791898] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.792735] ? torture_start+0x30/0x30 [dlm_locktorture] [ 151.793606] lock_torture+0x177/0x270 [dlm_locktorture] [ 151.794448] ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture] [ 151.795539] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.796476] ? do_raw_spin_lock+0x11e/0x1e0 [ 151.797152] ? mark_held_locks+0x34/0xb0 [ 151.797784] ? _raw_spin_unlock_irqrestore+0x30/0x70 [ 151.798581] ? __kthread_parkme+0x79/0x110 [ 151.799246] ? trace_preempt_on+0x2a/0xf0 [ 151.799902] ? __kthread_parkme+0x79/0x110 [ 151.800579] ? preempt_count_sub+0xd6/0x130 [ 151.801271] ? __kasan_check_read+0x11/0x20 [ 151.801963] ? __kthread_parkme+0xec/0x110 [ 151.802630] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.803569] kthread+0x192/0x1d0 [ 151.804104] ? kthread_complete_and_exit+0x30/0x30 [ 151.804881] ret_from_fork+0x1f/0x30 [ 151.805480] </TASK> [ 151.806111] Allocated by task 1347: [ 151.806681] kasan_save_stack+0x26/0x50 [ 151.807308] kasan_set_track+0x25/0x30 [ 151.807920] kasan_save_alloc_info+0x1e/0x30 [ 151.808609] __kasan_slab_alloc+0x63/0x80 [ 151.809263] kmem_cache_alloc+0x1ad/0x830 [ 151.809916] dlm_allocate_mhandle+0x17/0x20 [ 151.810590] dlm_midcomms_get_mhandle+0x96/0x260 [ 151.811344] _create_message+0x95/0x180 [ 151.811994] create_message.isra.29.constprop.64+0x57/0xc0 [ 151.812880] send_common+0x129/0x1b0 [ 151.813467] _convert_lock+0x46/0x150 [ 151.814074] convert_lock+0x7b/0xc0 [ 151.814648] dlm_lock+0x3ac/0x580 [ 151.815199] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.816258] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.817129] lock_t ---truncated---
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 489d8e559c6596eb08e16447d9830bc39afbe54e , < 84d6ce2aef1d06a53f606211da68a2085dfeb50d (git)
Affected: 489d8e559c6596eb08e16447d9830bc39afbe54e , < a3b0e9ac3c2447008db942d51f593841d8329e99 (git)
Affected: 489d8e559c6596eb08e16447d9830bc39afbe54e , < a2de9f9b686c71b4fa3663ae374f5f643c46a446 (git)
Affected: 489d8e559c6596eb08e16447d9830bc39afbe54e , < 724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.20 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/dlm/midcomms.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "84d6ce2aef1d06a53f606211da68a2085dfeb50d",
              "status": "affected",
              "version": "489d8e559c6596eb08e16447d9830bc39afbe54e",
              "versionType": "git"
            },
            {
              "lessThan": "a3b0e9ac3c2447008db942d51f593841d8329e99",
              "status": "affected",
              "version": "489d8e559c6596eb08e16447d9830bc39afbe54e",
              "versionType": "git"
            },
            {
              "lessThan": "a2de9f9b686c71b4fa3663ae374f5f643c46a446",
              "status": "affected",
              "version": "489d8e559c6596eb08e16447d9830bc39afbe54e",
              "versionType": "git"
            },
            {
              "lessThan": "724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba",
              "status": "affected",
              "version": "489d8e559c6596eb08e16447d9830bc39afbe54e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/dlm/midcomms.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.20",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: dlm: fix use after free in midcomms commit\n\nWhile working on processing dlm message in softirq context I experienced\nthe following KASAN use-after-free warning:\n\n[  151.760477] ==================================================================\n[  151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347\n\n[  151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828\n[  151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014\n[  151.768726] Call Trace:\n[  151.769277]  \u003cTASK\u003e\n[  151.769748]  dump_stack_lvl+0x5b/0x86\n[  151.770556]  print_report+0x180/0x4c8\n[  151.771378]  ? kasan_complete_mode_report_info+0x7c/0x1e0\n[  151.772241]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.773069]  kasan_report+0x93/0x1a0\n[  151.773668]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.774514]  __asan_load4+0x7e/0xa0\n[  151.775089]  dlm_midcomms_commit_mhandle+0x19d/0x4b0\n[  151.775890]  ? create_message.isra.29.constprop.64+0x57/0xc0\n[  151.776770]  send_common+0x19f/0x1b0\n[  151.777342]  ? remove_from_waiters+0x60/0x60\n[  151.778017]  ? lock_downgrade+0x410/0x410\n[  151.778648]  ? __this_cpu_preempt_check+0x13/0x20\n[  151.779421]  ? rcu_lockdep_current_cpu_online+0x88/0xc0\n[  151.780292]  _convert_lock+0x46/0x150\n[  151.780893]  convert_lock+0x7b/0xc0\n[  151.781459]  dlm_lock+0x3ac/0x580\n[  151.781993]  ? 0xffffffffc0540000\n[  151.782522]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.783379]  ? dlm_scan_rsbs+0xa70/0xa70\n[  151.784003]  ? preempt_count_sub+0xd6/0x130\n[  151.784661]  ? is_module_address+0x47/0x70\n[  151.785309]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.786166]  ? 0xffffffffc0540000\n[  151.786693]  ? lockdep_init_map_type+0xc3/0x360\n[  151.787414]  ? 0xffffffffc0540000\n[  151.787947]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[  151.789004]  ? torture_stop+0x120/0x120 [dlm_locktorture]\n[  151.789858]  ? 0xffffffffc0540000\n[  151.790392]  ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture]\n[  151.791347]  ? delay_tsc+0x94/0xc0\n[  151.791898]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[  151.792735]  ? torture_start+0x30/0x30 [dlm_locktorture]\n[  151.793606]  lock_torture+0x177/0x270 [dlm_locktorture]\n[  151.794448]  ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture]\n[  151.795539]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[  151.796476]  ? do_raw_spin_lock+0x11e/0x1e0\n[  151.797152]  ? mark_held_locks+0x34/0xb0\n[  151.797784]  ? _raw_spin_unlock_irqrestore+0x30/0x70\n[  151.798581]  ? __kthread_parkme+0x79/0x110\n[  151.799246]  ? trace_preempt_on+0x2a/0xf0\n[  151.799902]  ? __kthread_parkme+0x79/0x110\n[  151.800579]  ? preempt_count_sub+0xd6/0x130\n[  151.801271]  ? __kasan_check_read+0x11/0x20\n[  151.801963]  ? __kthread_parkme+0xec/0x110\n[  151.802630]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\n[  151.803569]  kthread+0x192/0x1d0\n[  151.804104]  ? kthread_complete_and_exit+0x30/0x30\n[  151.804881]  ret_from_fork+0x1f/0x30\n[  151.805480]  \u003c/TASK\u003e\n\n[  151.806111] Allocated by task 1347:\n[  151.806681]  kasan_save_stack+0x26/0x50\n[  151.807308]  kasan_set_track+0x25/0x30\n[  151.807920]  kasan_save_alloc_info+0x1e/0x30\n[  151.808609]  __kasan_slab_alloc+0x63/0x80\n[  151.809263]  kmem_cache_alloc+0x1ad/0x830\n[  151.809916]  dlm_allocate_mhandle+0x17/0x20\n[  151.810590]  dlm_midcomms_get_mhandle+0x96/0x260\n[  151.811344]  _create_message+0x95/0x180\n[  151.811994]  create_message.isra.29.constprop.64+0x57/0xc0\n[  151.812880]  send_common+0x129/0x1b0\n[  151.813467]  _convert_lock+0x46/0x150\n[  151.814074]  convert_lock+0x7b/0xc0\n[  151.814648]  dlm_lock+0x3ac/0x580\n[  151.815199]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\n[  151.816258]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\n[  151.817129]  lock_t\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The object is freed by a `DLM_ACK` message received from a remote peer over the DLM lowcomms transport (routable TCP/SCTP port 21064), and the acked sequence number is taken directly from the wire with no validation. Processing of remote peer data is what triggers the free, so this is network-reachable.\nAC:L - The attacker fully controls the freeing side and can spam arbitrary-sequence `DLM_ACK` packets continuously to free every in-flight mhandle, retrying indefinitely against a victim node with constant DLM lock traffic. The race window spans the whole `dlm_midcomms_get_mhandle()`\u2192`dlm_midcomms_commit_mhandle()` message-construction path, and the attacker can also drive load to induce the needed preemption.\nPR:N - DLM in the affected versions has no authentication or TLS; the only gate is that the source address matches a configured cluster node, which is a network-topology restriction rather than a credential. A peer, compromised cluster node, or spoofing attacker needs no account or privilege on the target.\nUI:N - No victim action is required; the crafted ACK is processed automatically by the DLM receive workqueue on a running cluster node.\nS:U - The corruption is confined to kernel memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free reads `mh-\u003enode`, `mh-\u003eopts`, `mh-\u003emsg`, and `mh-\u003eidx` out of a freed, mergeable-cache slab object, letting an attacker who grooms the slot control pointers that are subsequently dereferenced, yielding an arbitrary-read primitive.\nI:H - The stale handle is written through (`mh-\u003eopts-\u003eo_nextcmd = ...` via a pointer read from freed memory, plus `mh-\u003ecommitted = true`), and `srcu_read_unlock()` performs `this_cpu_inc(srcu_unlock_count[idx])` with an out-of-range index \u2014 both give out-of-bounds/arbitrary write primitives exploitable for control-flow hijack.\nA:H - A use-after-free plus corrupted SRCU counters reliably produce KASAN splats, WARNs, oopses, and either premature grace periods (cascading UAFs) or never-completing SRCU grace periods that hang DLM and the cluster filesystem."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:15:13.665Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/84d6ce2aef1d06a53f606211da68a2085dfeb50d"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446"
        },
        {
          "url": "https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba"
        }
      ],
      "title": "fs: dlm: fix use after free in midcomms commit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53629",
    "datePublished": "2025-10-07T15:19:32.960Z",
    "dateReserved": "2025-10-07T15:16:59.656Z",
    "dateUpdated": "2026-08-05T09:15:13.665Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53629",
      "date": "2026-08-05",
      "epss": "0.00454",
      "percentile": "0.3716"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53629\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-07T16:15:45.933\",\"lastModified\":\"2026-06-17T06:45:45.150\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfs: dlm: fix use after free in midcomms commit\\n\\nWhile working on processing dlm message in softirq context I experienced\\nthe following KASAN use-after-free warning:\\n\\n[  151.760477] ==================================================================\\n[  151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0\\n[  151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347\\n\\n[  151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828\\n[  151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014\\n[  151.768726] Call Trace:\\n[  151.769277]  \u003cTASK\u003e\\n[  151.769748]  dump_stack_lvl+0x5b/0x86\\n[  151.770556]  print_report+0x180/0x4c8\\n[  151.771378]  ? kasan_complete_mode_report_info+0x7c/0x1e0\\n[  151.772241]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\\n[  151.773069]  kasan_report+0x93/0x1a0\\n[  151.773668]  ? dlm_midcomms_commit_mhandle+0x19d/0x4b0\\n[  151.774514]  __asan_load4+0x7e/0xa0\\n[  151.775089]  dlm_midcomms_commit_mhandle+0x19d/0x4b0\\n[  151.775890]  ? create_message.isra.29.constprop.64+0x57/0xc0\\n[  151.776770]  send_common+0x19f/0x1b0\\n[  151.777342]  ? remove_from_waiters+0x60/0x60\\n[  151.778017]  ? lock_downgrade+0x410/0x410\\n[  151.778648]  ? __this_cpu_preempt_check+0x13/0x20\\n[  151.779421]  ? rcu_lockdep_current_cpu_online+0x88/0xc0\\n[  151.780292]  _convert_lock+0x46/0x150\\n[  151.780893]  convert_lock+0x7b/0xc0\\n[  151.781459]  dlm_lock+0x3ac/0x580\\n[  151.781993]  ? 0xffffffffc0540000\\n[  151.782522]  ? torture_stop+0x120/0x120 [dlm_locktorture]\\n[  151.783379]  ? dlm_scan_rsbs+0xa70/0xa70\\n[  151.784003]  ? preempt_count_sub+0xd6/0x130\\n[  151.784661]  ? is_module_address+0x47/0x70\\n[  151.785309]  ? torture_stop+0x120/0x120 [dlm_locktorture]\\n[  151.786166]  ? 0xffffffffc0540000\\n[  151.786693]  ? lockdep_init_map_type+0xc3/0x360\\n[  151.787414]  ? 0xffffffffc0540000\\n[  151.787947]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\\n[  151.789004]  ? torture_stop+0x120/0x120 [dlm_locktorture]\\n[  151.789858]  ? 0xffffffffc0540000\\n[  151.790392]  ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture]\\n[  151.791347]  ? delay_tsc+0x94/0xc0\\n[  151.791898]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\\n[  151.792735]  ? torture_start+0x30/0x30 [dlm_locktorture]\\n[  151.793606]  lock_torture+0x177/0x270 [dlm_locktorture]\\n[  151.794448]  ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture]\\n[  151.795539]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\\n[  151.796476]  ? do_raw_spin_lock+0x11e/0x1e0\\n[  151.797152]  ? mark_held_locks+0x34/0xb0\\n[  151.797784]  ? _raw_spin_unlock_irqrestore+0x30/0x70\\n[  151.798581]  ? __kthread_parkme+0x79/0x110\\n[  151.799246]  ? trace_preempt_on+0x2a/0xf0\\n[  151.799902]  ? __kthread_parkme+0x79/0x110\\n[  151.800579]  ? preempt_count_sub+0xd6/0x130\\n[  151.801271]  ? __kasan_check_read+0x11/0x20\\n[  151.801963]  ? __kthread_parkme+0xec/0x110\\n[  151.802630]  ? lock_torture_stats+0x80/0x80 [dlm_locktorture]\\n[  151.803569]  kthread+0x192/0x1d0\\n[  151.804104]  ? kthread_complete_and_exit+0x30/0x30\\n[  151.804881]  ret_from_fork+0x1f/0x30\\n[  151.805480]  \u003c/TASK\u003e\\n\\n[  151.806111] Allocated by task 1347:\\n[  151.806681]  kasan_save_stack+0x26/0x50\\n[  151.807308]  kasan_set_track+0x25/0x30\\n[  151.807920]  kasan_save_alloc_info+0x1e/0x30\\n[  151.808609]  __kasan_slab_alloc+0x63/0x80\\n[  151.809263]  kmem_cache_alloc+0x1ad/0x830\\n[  151.809916]  dlm_allocate_mhandle+0x17/0x20\\n[  151.810590]  dlm_midcomms_get_mhandle+0x96/0x260\\n[  151.811344]  _create_message+0x95/0x180\\n[  151.811994]  create_message.isra.29.constprop.64+0x57/0xc0\\n[  151.812880]  send_common+0x129/0x1b0\\n[  151.813467]  _convert_lock+0x46/0x150\\n[  151.814074]  convert_lock+0x7b/0xc0\\n[  151.814648]  dlm_lock+0x3ac/0x580\\n[  151.815199]  torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture]\\n[  151.816258]  torture_ex_iter+0xc3/0xea [dlm_locktorture]\\n[  151.817129]  lock_t\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/dlm/midcomms.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"489d8e559c6596eb08e16447d9830bc39afbe54e\",\"lessThan\":\"84d6ce2aef1d06a53f606211da68a2085dfeb50d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"489d8e559c6596eb08e16447d9830bc39afbe54e\",\"lessThan\":\"a3b0e9ac3c2447008db942d51f593841d8329e99\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"489d8e559c6596eb08e16447d9830bc39afbe54e\",\"lessThan\":\"a2de9f9b686c71b4fa3663ae374f5f643c46a446\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"489d8e559c6596eb08e16447d9830bc39afbe54e\",\"lessThan\":\"724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/dlm/midcomms.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.20\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.3\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.14\",\"versionEndExcluding\":\"6.1.20\",\"matchCriteriaId\":\"11DC9B79-A3D9-48E0-ACA3-BD431CD1AEE1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.2.3\",\"matchCriteriaId\":\"88C67289-22AD-4CA9-B202-5F5A80E5BA4B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/724b6bab0d75f1dc01fdfbf7fe8d4217a5cb90ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/84d6ce2aef1d06a53f606211da68a2085dfeb50d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a2de9f9b686c71b4fa3663ae374f5f643c46a446\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a3b0e9ac3c2447008db942d51f593841d8329e99\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:17:34+00:00",
      "cve": "CVE-2023-53629",
      "id": "CVE-2023-53629",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "152",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs: dlm: fix use after free in midcomms commit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53629.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


Detection rules are retrieved from Rulezet.