{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-16T18:36:37.447","vulnerabilities":[{"cve":{"id":"CVE-2023-52562","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-03-02T22:15:48.843","lastModified":"2025-01-16T17:02:14.957","vulnStatus":"Analyzed","cveTags":[],"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."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/slab_common: corrige la corrupción de la lista slab_caches después de kmem_cache_destroy() Después de el commit en Correcciones:, si un módulo que creó un caché de losa no libera todos sus objetos asignados antes de destruir el cache (en el momento rmmod), podríamos terminar liberando el objeto kmem_cache sin eliminarlo de la lista slab_caches, corrompiendo así la lista ya que kmem_cache_destroy() ignora el valor de retorno de Shutdown_cache(), que a su vez nunca elimina el objeto kmem_cache de slabs_list en caso __kmem_cache_shutdown() no puede liberar todas las losas del caché. Esto es fácilmente observable en un kernel construido con CONFIG_DEBUG_LIST=y ya que después de ese lanzamiento, el sistema activará inmediatamente las aserciones list_add o list_del, similares a la que se muestra a continuación tan pronto como se cree o destruya otro kmem_cache: [ 1041.213632] list_del corrupción. siguiente->anterior debería ser ffff89f596fb5768, pero era 52f1e5016aeee75d. (siguiente=ffff89f595a1b268) [1041.219165] ------------[ cortar aquí ]------------ [ 1041.221517] ¡ERROR del kernel en lib/list_debug.c:62! [ 1041.223452] código de operación no válido: 0000 [#1] PREEMPT SMP PTI [ 1041.225408] CPU: 2 PID: 1852 Comm: rmmod Kdump: cargado Contaminado: GBW OE 6.5.0 #15 [ 1041.228244] Nombre de hardware: PC estándar QEMU (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 24/05/2023 [ 1041.231212] RIP: 0010:__list_del_entry_valid+0xae/0xb0 Otra forma rápida de desencadenar este problema, en un kernel con CONFIG_SLUB=y, es configurar slub_debug para envenenar los objetos liberados y luego simplemente ejecutar cat /proc/slabinfo después de eliminar el módulo que filtra los objetos slab, en cuyo caso el kernel entrará en pánico: [50.954843] falla de protección general, probablemente para la dirección no canónica 0xa56b6b6b6b6b6b8b: 0000 [#1 ] PREEMPT SMP PTI [ 50.961545] CPU: 2 PID: 1495 Comm: cat Kdump: cargado Contaminado: GBW OE 6.5.0 #15 [ 50.966808] Nombre de hardware: PC estándar QEMU (Q35 + ICH9, 2009), BIOS edk2-20230524- 3.fc37 24/05/2023 [ 50.972663] RIP: 0010:get_slabinfo+0x42/0xf0 Este parche soluciona este problema verificando correctamente el valor de retorno de Shutdown_cache() antes de tomar la rama kmem_cache_release()."}],"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:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.56","matchCriteriaId":"88CD6F0B-B968-414C-86CA-2E442AEA0EA8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.5.6","matchCriteriaId":"870FC772-173A-4A0F-B1AF-7976AD6057D3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*","matchCriteriaId":"84267A4F-DBC2-444F-B41D-69E15E1BEC97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*","matchCriteriaId":"FB440208-241C-4246-9A83-C1715C0DAA6C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*","matchCriteriaId":"0DC421F1-3D5A-4BEF-BF76-4E468985D20B"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}