CVE-2026-81007
Published: September 15, 2026Last modified: September 15, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.182-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.103-r0) | |
| Stream | linux-lts | Vulnerable (6.18.46-r0) |
References
- https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c
- https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0
- https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1
- https://git.kernel.org/stable/c/7d66d54b974cff0a959e188af844d2d110422767
- https://git.kernel.org/stable/c/8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89
- https://git.kernel.org/stable/c/94f8d20153e348c79bc14dc25f873470518892da
- https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5
- https://git.kernel.org/stable/c/e527cd4e80066e1ed070fdc7c705bde340cdcc62