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CVE-2026-81007

ipmi: ipmb: validate write message length PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: validate write message length ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length. Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 51bd6f291583684f495ea498984dfc22049d7fd2 before 8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before 94f8d20153e348c79bc14dc25f873470518892da; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before e527cd4e80066e1ed070fdc7c705bde340cdcc62; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before 7d66d54b974cff0a959e188af844d2d110422767; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before 60939bcda6f3f104ef456fdbf3cc5733c0720fb1; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before 5719431ca2b5fa26560bb38f6202f8b97fa3bbb0; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before a84c6e3d188f2c6e674910929eb790634299d6d5; affected 51bd6f291583684f495ea498984dfc22049d7fd2 before 53637506884dbd5c91a89b1a3547d99d80f8ed2c
Linux / Linuxaffected 5.3; unaffected 0 before 5.3; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References