SB2026091319 - Out-of-bounds read in Linux kernel rtlwifi rtl8192du driver
Published: September 13, 2026
Security Bulletin ID
SB2026091319
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-2026-80943)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 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]
The vulnerability allows a local user to read memory out of bounds.
The vulnerability exists due to improper index validation in rtl92du_tx_fill_desc() when processing an 802.11 header with a QoS TID greater than 8. A local user can provide an 802.11 header with a QoS TID greater than 8 to read memory out of bounds.
Remediation
Install update from vendor's website.