{"id":"CVE-2026-81007","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-81007","summary":"ipmi: ipmb: validate write message length","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: ipmb: validate write message length\n\nipmb_write() read message fields before validating the length byte.\n\nA zero or short write can read uninitialized stack bytes.\n\nA length smaller than the SMBus header underflows the block write length.\n\nRequire a non-empty buffer and the minimum IPMB request length.\n\nAlso require the length byte plus payload before parsing the message.","published":"2026-09-11T19:42:58.751Z","modified":"2026-09-14T03:45:59.562290116Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.109"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81007.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81007"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:45:59.562290116Z"}}