SB2026092560 - Out-of-bounds write in Linux kernel wireless rsi driver
Published: September 25, 2026
Security Bulletin ID
SB2026092560
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-93802)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds write in rsi_prepare_beacon() when preparing an oversized beacon frame. A local user can provide an oversized beacon frame to cause a denial of service.
Remediation
Install update from vendor's website.