SB20260918324 - Out-of-bounds read in Linux kernel mt76 mt7996 driver
Published: September 18, 2026
Security Bulletin ID
SB20260918324
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-90349)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.