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CVE-2023-53765 (GCVE-0-2023-53765)

Vulnerability from cvelistv5 – Published: 2025-12-08 01:19 – Updated: 2026-05-11 19:51
VLAI
Title
dm cache: free background tracker's queued work in btracker_destroy
Summary
In the Linux kernel, the following vulnerability has been resolved: dm cache: free background tracker's queued work in btracker_destroy Otherwise the kernel can BUG with: [ 2245.426978] ============================================================================= [ 2245.435155] BUG bt_work (Tainted: G B W ): Objects remaining in bt_work on __kmem_cache_shutdown() [ 2245.445233] ----------------------------------------------------------------------------- [ 2245.445233] [ 2245.454879] Slab 0x00000000b0ce2b30 objects=64 used=2 fp=0x000000000a3c6a4e flags=0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff) [ 2245.467300] CPU: 7 PID: 10805 Comm: lvm Kdump: loaded Tainted: G B W 6.0.0-rc2 #19 [ 2245.476078] Hardware name: Dell Inc. PowerEdge R7525/0590KW, BIOS 2.5.6 10/06/2021 [ 2245.483646] Call Trace: [ 2245.486100] <TASK> [ 2245.488206] dump_stack_lvl+0x34/0x48 [ 2245.491878] slab_err+0x95/0xcd [ 2245.495028] __kmem_cache_shutdown.cold+0x31/0x136 [ 2245.499821] kmem_cache_destroy+0x49/0x130 [ 2245.503928] btracker_destroy+0x12/0x20 [dm_cache] [ 2245.508728] smq_destroy+0x15/0x60 [dm_cache_smq] [ 2245.513435] dm_cache_policy_destroy+0x12/0x20 [dm_cache] [ 2245.518834] destroy+0xc0/0x110 [dm_cache] [ 2245.522933] dm_table_destroy+0x5c/0x120 [dm_mod] [ 2245.527649] __dm_destroy+0x10e/0x1c0 [dm_mod] [ 2245.532102] dev_remove+0x117/0x190 [dm_mod] [ 2245.536384] ctl_ioctl+0x1a2/0x290 [dm_mod] [ 2245.540579] dm_ctl_ioctl+0xa/0x20 [dm_mod] [ 2245.544773] __x64_sys_ioctl+0x8a/0xc0 [ 2245.548524] do_syscall_64+0x5c/0x90 [ 2245.552104] ? syscall_exit_to_user_mode+0x12/0x30 [ 2245.556897] ? do_syscall_64+0x69/0x90 [ 2245.560648] ? do_syscall_64+0x69/0x90 [ 2245.564394] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 2245.569447] RIP: 0033:0x7fe52583ec6b ... [ 2245.646771] ------------[ cut here ]------------ [ 2245.651395] kmem_cache_destroy bt_work: Slab cache still has objects when called from btracker_destroy+0x12/0x20 [dm_cache] [ 2245.651408] WARNING: CPU: 7 PID: 10805 at mm/slab_common.c:478 kmem_cache_destroy+0x128/0x130 Found using: lvm2-testsuite --only "cache-single-split.sh" Ben bisected and found that commit 0495e337b703 ("mm/slab_common: Deleting kobject in kmem_cache_destroy() without holding slab_mutex/cpu_hotplug_lock") first exposed dm-cache's incomplete cleanup of its background tracker work objects.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b29d4986d0da1a27cd35917cdb433672f5c95d7f , < 673a3af21d5e3ed769f3eaed0c888244290a3506 (git)
Affected: b29d4986d0da1a27cd35917cdb433672f5c95d7f , < ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc (git)
Affected: b29d4986d0da1a27cd35917cdb433672f5c95d7f , < 95ab80a8a0fef2ce0cc494a306dd283948066ce7 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/dm-cache-background-tracker.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "b29d4986d0da1a27cd35917cdb433672f5c95d7f",
              "versionType": "git"
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            {
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              "status": "affected",
              "version": "b29d4986d0da1a27cd35917cdb433672f5c95d7f",
              "versionType": "git"
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              "status": "affected",
              "version": "b29d4986d0da1a27cd35917cdb433672f5c95d7f",
              "versionType": "git"
            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/dm-cache-background-tracker.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "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": "6.1.16",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: free background tracker\u0027s queued work in btracker_destroy\n\nOtherwise the kernel can BUG with:\n\n[ 2245.426978] =============================================================================\n[ 2245.435155] BUG bt_work (Tainted: G    B   W         ): Objects remaining in bt_work on __kmem_cache_shutdown()\n[ 2245.445233] -----------------------------------------------------------------------------\n[ 2245.445233]\n[ 2245.454879] Slab 0x00000000b0ce2b30 objects=64 used=2 fp=0x000000000a3c6a4e flags=0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\n[ 2245.467300] CPU: 7 PID: 10805 Comm: lvm Kdump: loaded Tainted: G    B   W          6.0.0-rc2 #19\n[ 2245.476078] Hardware name: Dell Inc. PowerEdge R7525/0590KW, BIOS 2.5.6 10/06/2021\n[ 2245.483646] Call Trace:\n[ 2245.486100]  \u003cTASK\u003e\n[ 2245.488206]  dump_stack_lvl+0x34/0x48\n[ 2245.491878]  slab_err+0x95/0xcd\n[ 2245.495028]  __kmem_cache_shutdown.cold+0x31/0x136\n[ 2245.499821]  kmem_cache_destroy+0x49/0x130\n[ 2245.503928]  btracker_destroy+0x12/0x20 [dm_cache]\n[ 2245.508728]  smq_destroy+0x15/0x60 [dm_cache_smq]\n[ 2245.513435]  dm_cache_policy_destroy+0x12/0x20 [dm_cache]\n[ 2245.518834]  destroy+0xc0/0x110 [dm_cache]\n[ 2245.522933]  dm_table_destroy+0x5c/0x120 [dm_mod]\n[ 2245.527649]  __dm_destroy+0x10e/0x1c0 [dm_mod]\n[ 2245.532102]  dev_remove+0x117/0x190 [dm_mod]\n[ 2245.536384]  ctl_ioctl+0x1a2/0x290 [dm_mod]\n[ 2245.540579]  dm_ctl_ioctl+0xa/0x20 [dm_mod]\n[ 2245.544773]  __x64_sys_ioctl+0x8a/0xc0\n[ 2245.548524]  do_syscall_64+0x5c/0x90\n[ 2245.552104]  ? syscall_exit_to_user_mode+0x12/0x30\n[ 2245.556897]  ? do_syscall_64+0x69/0x90\n[ 2245.560648]  ? do_syscall_64+0x69/0x90\n[ 2245.564394]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[ 2245.569447] RIP: 0033:0x7fe52583ec6b\n...\n[ 2245.646771] ------------[ cut here ]------------\n[ 2245.651395] kmem_cache_destroy bt_work: Slab cache still has objects when called from btracker_destroy+0x12/0x20 [dm_cache]\n[ 2245.651408] WARNING: CPU: 7 PID: 10805 at mm/slab_common.c:478 kmem_cache_destroy+0x128/0x130\n\nFound using: lvm2-testsuite --only \"cache-single-split.sh\"\n\nBen bisected and found that commit 0495e337b703 (\"mm/slab_common:\nDeleting kobject in kmem_cache_destroy() without holding\nslab_mutex/cpu_hotplug_lock\") first exposed dm-cache\u0027s incomplete\ncleanup of its background tracker work objects."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:51:15.067Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/673a3af21d5e3ed769f3eaed0c888244290a3506"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc"
        },
        {
          "url": "https://git.kernel.org/stable/c/95ab80a8a0fef2ce0cc494a306dd283948066ce7"
        }
      ],
      "title": "dm cache: free background tracker\u0027s queued work in btracker_destroy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53765",
    "datePublished": "2025-12-08T01:19:27.831Z",
    "dateReserved": "2025-12-08T01:18:04.281Z",
    "dateUpdated": "2026-05-11T19:51:15.067Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53765",
      "date": "2026-09-17",
      "epss": "0.00184",
      "percentile": "0.08231"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53765\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-08T02:15:52.420\",\"lastModified\":\"2026-06-17T06:46:01.870\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndm cache: free background tracker\u0027s queued work in btracker_destroy\\n\\nOtherwise the kernel can BUG with:\\n\\n[ 2245.426978] =============================================================================\\n[ 2245.435155] BUG bt_work (Tainted: G    B   W         ): Objects remaining in bt_work on __kmem_cache_shutdown()\\n[ 2245.445233] -----------------------------------------------------------------------------\\n[ 2245.445233]\\n[ 2245.454879] Slab 0x00000000b0ce2b30 objects=64 used=2 fp=0x000000000a3c6a4e flags=0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\\n[ 2245.467300] CPU: 7 PID: 10805 Comm: lvm Kdump: loaded Tainted: G    B   W          6.0.0-rc2 #19\\n[ 2245.476078] Hardware name: Dell Inc. PowerEdge R7525/0590KW, BIOS 2.5.6 10/06/2021\\n[ 2245.483646] Call Trace:\\n[ 2245.486100]  \u003cTASK\u003e\\n[ 2245.488206]  dump_stack_lvl+0x34/0x48\\n[ 2245.491878]  slab_err+0x95/0xcd\\n[ 2245.495028]  __kmem_cache_shutdown.cold+0x31/0x136\\n[ 2245.499821]  kmem_cache_destroy+0x49/0x130\\n[ 2245.503928]  btracker_destroy+0x12/0x20 [dm_cache]\\n[ 2245.508728]  smq_destroy+0x15/0x60 [dm_cache_smq]\\n[ 2245.513435]  dm_cache_policy_destroy+0x12/0x20 [dm_cache]\\n[ 2245.518834]  destroy+0xc0/0x110 [dm_cache]\\n[ 2245.522933]  dm_table_destroy+0x5c/0x120 [dm_mod]\\n[ 2245.527649]  __dm_destroy+0x10e/0x1c0 [dm_mod]\\n[ 2245.532102]  dev_remove+0x117/0x190 [dm_mod]\\n[ 2245.536384]  ctl_ioctl+0x1a2/0x290 [dm_mod]\\n[ 2245.540579]  dm_ctl_ioctl+0xa/0x20 [dm_mod]\\n[ 2245.544773]  __x64_sys_ioctl+0x8a/0xc0\\n[ 2245.548524]  do_syscall_64+0x5c/0x90\\n[ 2245.552104]  ? syscall_exit_to_user_mode+0x12/0x30\\n[ 2245.556897]  ? do_syscall_64+0x69/0x90\\n[ 2245.560648]  ? do_syscall_64+0x69/0x90\\n[ 2245.564394]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n[ 2245.569447] RIP: 0033:0x7fe52583ec6b\\n...\\n[ 2245.646771] ------------[ cut here ]------------\\n[ 2245.651395] kmem_cache_destroy bt_work: Slab cache still has objects when called from btracker_destroy+0x12/0x20 [dm_cache]\\n[ 2245.651408] WARNING: CPU: 7 PID: 10805 at mm/slab_common.c:478 kmem_cache_destroy+0x128/0x130\\n\\nFound using: lvm2-testsuite --only \\\"cache-single-split.sh\\\"\\n\\nBen bisected and found that commit 0495e337b703 (\\\"mm/slab_common:\\nDeleting kobject in kmem_cache_destroy() without holding\\nslab_mutex/cpu_hotplug_lock\\\") first exposed dm-cache\u0027s incomplete\\ncleanup of its background tracker work objects.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/md/dm-cache-background-tracker.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b29d4986d0da1a27cd35917cdb433672f5c95d7f\",\"lessThan\":\"673a3af21d5e3ed769f3eaed0c888244290a3506\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b29d4986d0da1a27cd35917cdb433672f5c95d7f\",\"lessThan\":\"ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b29d4986d0da1a27cd35917cdb433672f5c95d7f\",\"lessThan\":\"95ab80a8a0fef2ce0cc494a306dd283948066ce7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/md/dm-cache-background-tracker.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.16\",\"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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/673a3af21d5e3ed769f3eaed0c888244290a3506\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/95ab80a8a0fef2ce0cc494a306dd283948066ce7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:37:18+00:00",
      "cve": "CVE-2023-53765",
      "id": "CVE-2023-53765",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "321",
      "product_status:known_affected": "66",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: dm cache: free background tracker\u0027s queued work in btracker_destroy",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53765.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-05T00:47:49Z",
      "cve": "CVE-2023-53765",
      "id": "CVE-2023-53765",
      "initial_release_date": "2025-12-09T00:28:59Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "497",
      "product_status:recommended": "70",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53765",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53765.json",
      "version": "23"
    }
  }
}



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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.
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  • 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.


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