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CVE-2026-31429VulnerabilityPublished Updated

Microsoft · net: skb: fix cross-cache free of KFENCE-allocated skb head

Affects MicrosoftSource GCVE Database

0

Not known to be exploited.

Data as of 27 Oct 2026, 00:09 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =3.0
Fixed in–

Description

CVE-2026-31429 addresses a vulnerability in the network subsystem related to the cross-cache freeing of KFENCE-allocated skb head structures. The issue pertains to the handling of socket buffer (skb) heads allocated with Kernel Electric Fence (KFENCE), potentially leading to improper memory management. The affected product is Microsoft software version 3.0. No CVSS score or detailed impact information is provided.

References

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