CVE-2026-31690: Linux kernel · firmware: thead: Fix buffer overflow and use standard endian macros
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 12 Nov 2026, 03:18 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 27 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
AI-suggested
A fix has been implemented in the Linux kernel to address the buffer overflow and improve code quality by using standard endian macros. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
Description
A buffer overflow vulnerability in the Linux kernel's TH1520 AON firmware protocol driver has been fixed. The issue involved unsafe pointer arithmetic accessing the 'mode' field, leading to a potential buffer overflow. Additionally, custom endian macros were replaced with standard kernel macros for improved portability. The fix has been tested and confirmed to not affect GPU power-up or driver probing.