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VulnerabilityPublished Updated

CVE-2026-80529: Linux kernel · xfs: don't swallow dquot recovery verification errors

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e506e127fcb4e2bad1045805f1740b395eea9618 : patch Linux kernel soon.

Data as of 6 Nov 2026, 17:48 UTC

Severity
High

Rated High 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 e506e127fcb4e2bad1045805f1740b395eea9618, e2b4a856085e9bd939bde2dee0d08b1d41babde9, a233b3362a3c7bf23f5143b4ef4b17ec337fcb4d +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Aug 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
  • >=6.1.128 <6.1.184
  • >=6.6.17 <6.6.153
Fixed in
  • e506e127fcb4e2bad1045805f1740b395eea9618
  • e2b4a856085e9bd939bde2dee0d08b1d41babde9
  • a233b3362a3c7bf23f5143b4ef4b17ec337fcb4d
  • 38a4dbe588bd028a07a77dc5cee62ee3ce21e87d
  • 36a31b12540c0a0a3b77a01fda86de646f2961fb
  • 6.6.153
  • 6.1.184
  • 5b756fbb60b5d26063f46a11a3c7daa7eb616d79
LinuxLinuxAffected
  • =6.7
Fixed in–

AI-suggested

The issue has been fixed in Linux kernel versions 6.1.184, 6.6.153, and 6.7, among others. Users and administrators should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's XFS filesystem quota recovery process causes corruption errors during dquot recovery verification to be ignored. This leads to the system treating corrupted quota buffers as valid and potentially writing them back to disk. The issue has been fixed in specific Linux kernel versions.

References

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