{"id":"CVE-2023-52562","state":"PUBLISHED","title":"mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()\n\nAfter the commit in Fixes:, if a module that created a slab cache does not\nrelease all of its allocated objects before destroying the cache (at rmmod\ntime), we might end up releasing the kmem_cache object without removing it\nfrom the slab_caches list thus corrupting the list as kmem_cache_destroy()\nignores the return value from shutdown_cache(), which in turn never removes\nthe kmem_cache object from slabs_list in case __kmem_cache_shutdown() fails\nto release all of the cache's slabs.\n\nThis is easily observable on a kernel built with CONFIG_DEBUG_LIST=y\nas after that ill release the system will immediately trip on list_add,\nor list_del, assertions similar to the one shown below as soon as another\nkmem_cache gets created, or destroyed:\n\n  [ 1041.213632] list_del corruption. next->prev should be ffff89f596fb5768, but was 52f1e5016aeee75d. (next=ffff89f595a1b268)\n  [ 1041.219165] ------------[ cut here ]------------\n  [ 1041.221517] kernel BUG at lib/list_debug.c:62!\n  [ 1041.223452] invalid opcode: 0000 [#1] PREEMPT SMP PTI\n  [ 1041.225408] CPU: 2 PID: 1852 Comm: rmmod Kdump: loaded Tainted: G    B   W  OE      6.5.0 #15\n  [ 1041.228244] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n  [ 1041.231212] RIP: 0010:__list_del_entry_valid+0xae/0xb0\n\nAnother quick way to trigger this issue, in a kernel with CONFIG_SLUB=y,\nis to set slub_debug to poison the released objects and then just run\ncat /proc/slabinfo after removing the module that leaks slab objects,\nin which case the kernel will panic:\n\n  [   50.954843] general protection fault, probably for non-canonical address 0xa56b6b6b6b6b6b8b: 0000 [#1] PREEMPT SMP PTI\n  [   50.961545] CPU: 2 PID: 1495 Comm: cat Kdump: loaded Tainted: G    B   W  OE      6.5.0 #15\n  [   50.966808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n  [   50.972663] RIP: 0010:get_slabinfo+0x42/0xf0\n\nThis patch fixes this issue by properly checking shutdown_cache()'s\nreturn value before taking the kmem_cache_release() branch.","publishedAt":"2024-03-02T21:59:35.568Z","updatedAt":"2026-05-23T15:26:04.021Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"a5569bb187521432f509b69dda7d29f78b2d38b0","versionType":"git"},{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"51988be187b041e5355245957b0b9751fa382e0d","versionType":"git"},{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"46a9ea6681907a3be6b6b0d43776dccc62cad6cf","versionType":"git"},{"version":"357321557920c805de2b14832002465c320eea4f","status":"affected","versionType":"git"},{"version":"5.19.8","status":"affected","lessThan":"5.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/slab_common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.56","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.6","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/slab_common.c"]}],"references":["https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0","https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d","https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52562.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52562","state":"PUBLISHED","datePublished":"2024-03-02T21:59:35.568Z","dateUpdated":"2026-05-23T15:26:04.021Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-03-02T21:55:42.566Z"},"containers":{"cna":{"title":"mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()\n\nAfter the commit in Fixes:, if a module that created a slab cache does not\nrelease all of its allocated objects before destroying the cache (at rmmod\ntime), we might end up releasing the kmem_cache object without removing it\nfrom the slab_caches list thus corrupting the list as kmem_cache_destroy()\nignores the return value from shutdown_cache(), which in turn never removes\nthe kmem_cache object from slabs_list in case __kmem_cache_shutdown() fails\nto release all of the cache's slabs.\n\nThis is easily observable on a kernel built with CONFIG_DEBUG_LIST=y\nas after that ill release the system will immediately trip on list_add,\nor list_del, assertions similar to the one shown below as soon as another\nkmem_cache gets created, or destroyed:\n\n  [ 1041.213632] list_del corruption. next->prev should be ffff89f596fb5768, but was 52f1e5016aeee75d. (next=ffff89f595a1b268)\n  [ 1041.219165] ------------[ cut here ]------------\n  [ 1041.221517] kernel BUG at lib/list_debug.c:62!\n  [ 1041.223452] invalid opcode: 0000 [#1] PREEMPT SMP PTI\n  [ 1041.225408] CPU: 2 PID: 1852 Comm: rmmod Kdump: loaded Tainted: G    B   W  OE      6.5.0 #15\n  [ 1041.228244] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n  [ 1041.231212] RIP: 0010:__list_del_entry_valid+0xae/0xb0\n\nAnother quick way to trigger this issue, in a kernel with CONFIG_SLUB=y,\nis to set slub_debug to poison the released objects and then just run\ncat /proc/slabinfo after removing the module that leaks slab objects,\nin which case the kernel will panic:\n\n  [   50.954843] general protection fault, probably for non-canonical address 0xa56b6b6b6b6b6b8b: 0000 [#1] PREEMPT SMP PTI\n  [   50.961545] CPU: 2 PID: 1495 Comm: cat Kdump: loaded Tainted: G    B   W  OE      6.5.0 #15\n  [   50.966808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023\n  [   50.972663] RIP: 0010:get_slabinfo+0x42/0xf0\n\nThis patch fixes this issue by properly checking shutdown_cache()'s\nreturn value before taking the kmem_cache_release() branch."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"a5569bb187521432f509b69dda7d29f78b2d38b0","versionType":"git"},{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"51988be187b041e5355245957b0b9751fa382e0d","versionType":"git"},{"version":"0495e337b7039191dfce6e03f5f830454b1fae6b","status":"affected","lessThan":"46a9ea6681907a3be6b6b0d43776dccc62cad6cf","versionType":"git"},{"version":"357321557920c805de2b14832002465c320eea4f","status":"affected","versionType":"git"},{"version":"5.19.8","status":"affected","lessThan":"5.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/slab_common.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.56","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.6","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/slab_common.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0"},{"url":"https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d"},{"url":"https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:26:04.021Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.5.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T23:03:20.744Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-52562","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:56:36.342316Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:33:39.395Z"}}]}}}