{"id":"CVE-2026-63824","revision":null,"records":[{"revision":"35fdc4e77f9248d8ad46848bce480c14","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63824","aliases":[],"title":"KEYS: fix overflow in keyctl_pkey_params_get_2()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: fix overflow in keyctl_pkey_params_get_2()\n\nThe length for the internal output buffer is calculated incorrectly, which\ncan result overflow when a too small buffer is provided.\n\nFix the bug by allocating internal output with the size of the maximum\nlength of the cryptographic primitive instead of caller provided size.","state":0,"publishedAt":"2026-07-19T12:02:20.406+00:00","modifiedAt":"2026-10-19T20:07:48.872+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"security/keys/keyctl_pkey.c\"\n ],\n \"versions\": [\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"622ec2dcd59f21623f2a7ab773c80ceb7d555e3a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"b1e247338bc71826a2d2def3e0874c34749df69a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"5966e4e2ba213ab7ad559166152eb4f1f170dd2c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"5165f1cc727f1322456735df212d8e26ec237a8d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"b11c1fa32667692a2c0566e10163758e786e430c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"670fc6a311ed321522b7fff92cf0fc376b4f6e78\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"00d60fd3b93219ea854220f0fd264b86398cbc53\",\n \"lessThan\": \"cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"security/keys/keyctl_pkey.c\"\n 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\"version\": \"7.1.3\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a","https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a","https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3","https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c","https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d","https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c","https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78","https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63824","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63824","identifiers":["CVE-2026-63824"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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