{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T01:28:03.768","vulnerabilities":[{"cve":{"id":"CVE-2023-52468","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-02-26T16:27:48.710","lastModified":"2024-11-21T08:39:50.360","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclass: fix use-after-free in class_register()\n\nThe lock_class_key is still registered and can be found in\nlock_keys_hash hlist after subsys_private is freed in error\nhandler path.A task who iterate over the lock_keys_hash\nlater may cause use-after-free.So fix that up and unregister\nthe lock_class_key before kfree(cp).\n\nOn our platform, a driver fails to kset_register because of\ncreating duplicate filename '/class/xxx'.With Kasan enabled,\nit prints a invalid-access bug report.\n\nKASAN bug report:\n\nBUG: KASAN: invalid-access in lockdep_register_key+0x19c/0x1bc\nWrite of size 8 at addr 15ffff808b8c0368 by task modprobe/252\nPointer tag: [15], memory tag: [fe]\n\nCPU: 7 PID: 252 Comm: modprobe Tainted: G        W\n 6.6.0-mainline-maybe-dirty #1\n\nCall trace:\ndump_backtrace+0x1b0/0x1e4\nshow_stack+0x2c/0x40\ndump_stack_lvl+0xac/0xe0\nprint_report+0x18c/0x4d8\nkasan_report+0xe8/0x148\n__hwasan_store8_noabort+0x88/0x98\nlockdep_register_key+0x19c/0x1bc\nclass_register+0x94/0x1ec\ninit_module+0xbc/0xf48 [rfkill]\ndo_one_initcall+0x17c/0x72c\ndo_init_module+0x19c/0x3f8\n...\nMemory state around the buggy address:\nffffff808b8c0100: 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a\nffffff808b8c0200: 8a 8a 8a 8a 8a 8a 8a 8a fe fe fe fe fe fe fe fe\n>ffffff808b8c0300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe\n                                     ^\nffffff808b8c0400: 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03\n\nAs CONFIG_KASAN_GENERIC is not set, Kasan reports invalid-access\nnot use-after-free here.In this case, modprobe is manipulating\nthe corrupted lock_keys_hash hlish where lock_class_key is already\nfreed before.\n\nIt's worth noting that this only can happen if lockdep is enabled,\nwhich is not true for normal system."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clase: corrige use-after-free en class_register() Lock_class_key todavía está registrada y se puede encontrar en lock_keys_hash hlist después de que subsys_private se libere en la ruta del controlador de errores. Una tarea que itera sobre Lock_keys_hash más tarde puede causar use-after-free. Así que solucione eso y cancele el registro de lock_class_key antes de kfree (cp). En nuestra plataforma, un controlador no logra kset_register debido a que crea un nombre de archivo duplicado '/class/xxx'. Con Kasan habilitado, imprime un informe de error de acceso no válido. Informe de error de KASAN: ERROR: KASAN: acceso no válido en lockdep_register_key+0x19c/0x1bc Escritura de tamaño 8 en la dirección 15ffff808b8c0368 mediante tarea modprobe/252 Etiqueta de puntero: [15], etiqueta de memoria: [fe] CPU: 7 PID: 252 Comm: modprobe contaminado: GW 6.6.0-mainline-maybe-dirty #1 Rastreo de llamadas: dump_backtrace+0x1b0/0x1e4 show_stack+0x2c/0x40 dump_stack_lvl+0xac/0xe0 print_report+0x18c/0x4d8 kasan_report+0xe8/0x148 __hwasan_store8_noabort+0x 88/0x98 lockdep_register_key+ 0x19c/0x1bc class_register+0x94/0x1ec init_module+0xbc/0xf48 [rfkill] do_one_initcall+0x17c/0x72c do_init_module+0x19c/0x3f8 ... Estado de la memoria alrededor de la dirección del error: ffffff808b8c0100: 8a 8a 8a 8a 8a 8 un 8a 8a 8a 8a 8a 8a 8a 8a 8a 8a ffffff808b8c0200: 8a 8a 8a 8a 8a 8a 8a 8a 8a fe fe fe fe fe fe> ffffff808b8c0300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ fffffff808b8c0400: 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 03 Como CONFIG_KASAN_GENERIC no está configurado, Kasan informa aquí de acceso no válido, no use-after-free. En este caso, modprobe está manipulando el lock_keys_hash hlish corrupto donde lock_class_key ya se liberó antes. Vale la pena señalar que esto sólo puede suceder si lockdep está habilitado, lo cual no es cierto para el sistema normal."}],"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":"6.4.0","versionEndExcluding":"6.6.14","matchCriteriaId":"686183E6-D5C3-4A5B-9A18-8E3B4294EA6A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7.0","versionEndExcluding":"6.7.2","matchCriteriaId":"0EA3778C-730B-464C-8023-18CA6AC0B807"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0f1486dafca3398c4c46b9f6e6452fa27e73b559","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/93ec4a3b76404bce01bd5c9032bef5df6feb1d62","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b57196a5ec5e4c0ffecde8348b085b778c7dce04","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/0f1486dafca3398c4c46b9f6e6452fa27e73b559","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/93ec4a3b76404bce01bd5c9032bef5df6feb1d62","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b57196a5ec5e4c0ffecde8348b085b778c7dce04","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}