{"id":"CVE-2026-63824","title":"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…","summary":"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…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","published":"2026-07-19","updated":"2026-08-17","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63824","references":[{"url":"https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.0013,"epssPercentile":0.02149,"ingestedAt":"2026-08-17T05:47:49.880Z","slug":"CVE-2026-63824","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}