Use of Uninitialized Variable in Linux kernel - CVE-2026-81007
Published: September 12, 2026
Vulnerability identifier: #VU149386
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81007
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose uninitialized stack memory.
The vulnerability exists due to improper length validation in the ipmb_write() function when writing a zero or short IPMB message. A local user can write a zero or short IPMB message to disclose uninitialized stack memory.
Affected software
Linux kernel
How to mitigate CVE-2026-81007
Install security update from vendor's repository.