{"id":"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.","modified":"2026-09-13T03:47:17.411996650Z","published":"2026-09-11T19:42:58.751Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81007.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"51bd6f291583684f495ea498984dfc22049d7fd2"},{"fixed":"60939bcda6f3f104ef456fdbf3cc5733c0720fb1"},{"fixed":"5719431ca2b5fa26560bb38f6202f8b97fa3bbb0"},{"fixed":"a84c6e3d188f2c6e674910929eb790634299d6d5"},{"fixed":"53637506884dbd5c91a89b1a3547d99d80f8ed2c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81007.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81007.json"}}],"schema_version":"1.9.0"}