SB2026092568 - Out-of-bounds read in Linux kernel iwlwifi mvm driver
Published: September 25, 2026
Security Bulletin ID
SB2026092568
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-93793)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause an out-of-bounds read.
The vulnerability exists due to improper length validation in TX_CMD response parsing in the iwlwifi mvm driver when processing TX_CMD responses with payloads shorter than the frame_count-dependent status layout. A local user can supply a malformed TX_CMD response to cause an out-of-bounds read.
Remediation
Install update from vendor's website.