Out-of-bounds read in Linux kernel - CVE-2026-90349
Published: September 18, 2026
Vulnerability identifier: #VU151137
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90349
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds memory access.
The vulnerability exists due to an out-of-bounds read in mt7996_tx() when processing a transmission with an unspecified mac80211 link identifier. A local user can cause mt7996_tx() to use the unset primary link identifier as an array index to perform an out-of-bounds memory access.
The primary link identifier remains unset until the first link is added.
Affected software
Linux kernel
How to mitigate CVE-2026-90349
Install security update from vendor's repository.