{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52468", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.297Z", "datePublished": "2024-02-25T08:16:32.387Z", "dateUpdated": "2026-05-11T19:27:53.927Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:27:53.927Z" }, "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/base/class.c" ], "versions": [ { "version": "dcfbb67e48a2becfce7990386e985b9c45098ee5", "lessThan": "b57196a5ec5e4c0ffecde8348b085b778c7dce04", "status": "affected", "versionType": "git" }, { "version": "dcfbb67e48a2becfce7990386e985b9c45098ee5", "lessThan": "0f1486dafca3398c4c46b9f6e6452fa27e73b559", "status": "affected", "versionType": "git" }, { "version": "dcfbb67e48a2becfce7990386e985b9c45098ee5", "lessThan": "93ec4a3b76404bce01bd5c9032bef5df6feb1d62", "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/base/class.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.14", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.2", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.7.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b57196a5ec5e4c0ffecde8348b085b778c7dce04" }, { "url": "https://git.kernel.org/stable/c/0f1486dafca3398c4c46b9f6e6452fa27e73b559" }, { "url": "https://git.kernel.org/stable/c/93ec4a3b76404bce01bd5c9032bef5df6feb1d62" } ], "title": "class: fix use-after-free in class_register()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2023-52468", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-02-26T18:14:41.496128Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:24:16.199Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:19.632Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/b57196a5ec5e4c0ffecde8348b085b778c7dce04", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/0f1486dafca3398c4c46b9f6e6452fa27e73b559", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/93ec4a3b76404bce01bd5c9032bef5df6feb1d62", "tags": [ "x_transferred" ] } ] } ] } }