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VulnerabilityPublished Updated

CVE-2026-31559: Linux kernel · LoongArch: Fix missing NULL checks for kstrdup()

Affects Linux kernelSource GCVE Database

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Not known to be exploited · fixed in 6.12.43 : update Linux kernel when convenient.

Data as of 12 Nov 2026, 03:33 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
Patch
Available – fixed in 6.12.43

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

Affected software

ProductAffectedFixed in
Linux LinuxAffected
  • =6.12.43
  • =6.15.11
  • =6.16.2
Fixed in–

AI-suggested

A fix is available in Linux kernel versions 6.12.43, 6.15.11, and 6.16.2. Users and administrators should upgrade to these or later versions to resolve the issue. No other mitigation actions are indicated.

Description

A vulnerability in the Linux kernel related to the LoongArch architecture has been fixed. The issue involved missing NULL checks for the kstrdup() function, which could lead to a kernel oops during early boot if memory allocation failed while parsing the CPU model from the device tree. Additionally, a code change replaced multiple calls to of_node_put() by using of_root instead of of_find_node_by_path("/").

References

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