SB20260815137 - Out-of-bounds read in Linux kernel ieee80211_s1g_check_tim()
Published: August 15, 2026
Security Bulletin ID
SB20260815137
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
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-2026-74336)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in ieee80211_s1g_check_tim() when parsing a received S1G TIM element. A remote attacker can send a specially crafted wireless frame to disclose sensitive information.
The issue can read up to two bytes beyond the TIM element when the TIM is the last element in the frame.
Remediation
Install update from vendor's website.