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VulnerabilityPublished Updated

CVE-2026-80744: Linux kernel · netfilter: nf_tables_offload: suppress WARN_ON_ONCE for ENOMEM in abort path

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in d02f592064347e0c1e0d84f24941ad338838cc48 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:40 UTC

Severity
Low

Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in d02f592064347e0c1e0d84f24941ad338838cc48, c23620a0fa5b1d80399f894c41a9f78bc29d6235, 2319033c4bf8bdb275a9e4e1f7af9bf8a457ad79 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Sep 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 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < d02f592064347e0c1e0d84f24941ad338838cc48
Fixed in
  • d02f592064347e0c1e0d84f24941ad338838cc48
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < c23620a0fa5b1d80399f894c41a9f78bc29d6235
Fixed in
  • c23620a0fa5b1d80399f894c41a9f78bc29d6235
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < 2319033c4bf8bdb275a9e4e1f7af9bf8a457ad79
Fixed in
  • 2319033c4bf8bdb275a9e4e1f7af9bf8a457ad79
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < 17c132e18ca5d1641ddbaed8d0e6ecfd1d38fa0b
Fixed in
  • 17c132e18ca5d1641ddbaed8d0e6ecfd1d38fa0b
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < 09bda4b6df222fd1819e8f188c3a6e90caf546d3
Fixed in
  • 09bda4b6df222fd1819e8f188c3a6e90caf546d3
LinuxLinuxAffected
  • ≥ 63b48c73ff567bbab1f940d6e8f3f48607077a13, < 7ce9851be6f2b019e96e105a9de99715aec6deb4
Fixed in
  • 7ce9851be6f2b019e96e105a9de99715aec6deb4

AI-suggested

A fix is available and has been applied in the Linux kernel via multiple commits. Users should update their Linux kernel to a version including these fixes to suppress the unnecessary WARN_ON_ONCE warnings on -ENOMEM errors in nf_tables_offload. No other mitigation is required.

Description

A Linux kernel vulnerability in the netfilter nf_tables_offload component caused WARN_ON_ONCE warnings on memory allocation failures (-ENOMEM) during rollback in nft_flow_rule_offload_abort(). This was a false positive warning triggered under low-memory conditions, not indicating a kernel bug. The issue has been fixed by changing the warning condition to exclude expected -ENOMEM errors.

References

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