{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53765", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-08T01:18:04.281Z", "datePublished": "2025-12-08T01:19:27.831Z", "dateUpdated": "2025-12-08T01:19:27.831Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-08T01:19:27.831Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: free background tracker's 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] <TASK>\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's incomplete\ncleanup of its background tracker work objects."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/dm-cache-background-tracker.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "673a3af21d5e3ed769f3eaed0c888244290a3506", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ed56ad5cacb7a3aeb611494d5d66e2399d2bfecc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "95ab80a8a0fef2ce0cc494a306dd283948066ce7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/dm-cache-background-tracker.c"], "versions": [{"version": "6.1.16", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.3", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.3"}]}]}], "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's queued work in btracker_destroy", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: free background tracker's 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] <TASK>\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's incomplete\ncleanup of its background tracker work objects."}], "id": "CVE-2023-53765", "lastModified": "2025-12-08T18:26:19.900", "metrics": {}, "published": "2025-12-08T02:15:52.420", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: dm cache: free background tracker's queued work in btracker_destroy", "id": "2419938", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419938"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53765", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53765\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53765\nhttps://lore.kernel.org/linux-cve-announce/2025120845-CVE-2023-53765-0317@gregkh/T"], "threat_severity": "Moderate"}