CVE-2026-81007

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.

Score

CVSS 3.1 7.1 High

Status

Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-11

Last modified

2026-10-19

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89
• https://git.kernel.org/stable/c/94f8d20153e348c79bc14dc25f873470518892da
• https://git.kernel.org/stable/c/e527cd4e80066e1ed070fdc7c705bde340cdcc62
• https://git.kernel.org/stable/c/7d66d54b974cff0a959e188af844d2d110422767
• https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1
• https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0
• https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5
• https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c