SB20260918147 - Buffer overflow in Linux kernel iwlwifi mei driver
Published: September 18, 2026
Security Bulletin ID
SB20260918147
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) Buffer overflow (CVE-ID: CVE-2026-93063)
CWE-ID: CWE-120 - Buffer overflow
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 cause a buffer overflow.
The vulnerability exists due to improper bounds checking in the iwl_mei_handle_sap_rx_cmd function when processing an oversized SAP message. A local user can supply a SAP message whose declared length exceeds the local buffer size to cause a buffer overflow.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/242125bbf19a2974d22f3d5025c9c14c0a4aea58
- https://git.kernel.org/stable/c/7d8cc301bcba233f31b589a45f4c1c97f2bb90d6
- https://git.kernel.org/stable/c/9c6bea89a16815688a5240dd4a74c922a92fcdc3
- https://git.kernel.org/stable/c/a4034f1cc8a422cefc519290d8e6cfb7ff773586
- https://git.kernel.org/stable/c/b90ebae632318dc2e5cd4ac96e454ec50f705579
- https://git.kernel.org/stable/c/f7f770d12e6e928006f89a59291074e5fea82886