{"id":"CVE-2026-63824","summary":"KEYS: fix overflow in keyctl_pkey_params_get_2()","details":"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.","modified":"2026-07-23T09:59:49.490277185Z","published":"2026-07-19T12:02:20.406Z","related":["openSUSE-SU-2026:11339-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63824.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63824.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63824"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"00d60fd3b93219ea854220f0fd264b86398cbc53"},{"fixed":"622ec2dcd59f21623f2a7ab773c80ceb7d555e3a"},{"fixed":"b1e247338bc71826a2d2def3e0874c34749df69a"},{"fixed":"0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3"},{"fixed":"5966e4e2ba213ab7ad559166152eb4f1f170dd2c"},{"fixed":"5165f1cc727f1322456735df212d8e26ec237a8d"},{"fixed":"b11c1fa32667692a2c0566e10163758e786e430c"},{"fixed":"670fc6a311ed321522b7fff92cf0fc376b4f6e78"},{"fixed":"cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63824.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.10.260"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.211"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.177"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.144"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.38"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63824.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}