Out-of-bounds write in Linux kernel - CVE-2026-93079
Published: September 18, 2026
Vulnerability identifier: #VU150938
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93079
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to an out-of-bounds write in cxlctl_get_feature() when processing FWCTL_RPC Get Feature requests with a count larger than the available output payload room. A local user can provide a small output length and a large feature count to cause memory corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-93079
Install security update from vendor's repository.