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VulnerabilityPublished Updated

CVE-2026-90134: Linux kernel · ntfs: fix kmap_local_page() usage in compress

Affects Linux kernelSource GCVE Database

0

Not known to be exploited.

Data as of 26 Oct 2026, 14:05 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 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
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14?arch=source&distro=nobleOther threatsAffected
  • 6.14.0-1007.7~24.04.1 – 6.14.0-1018.18~24.04.1
11 affected builds
Fixed in–
Ubuntu 24.04 LTSlinux-aws-6.17pkg:deb/ubuntu/linux-aws-6.17?arch=source&distro=nobleOther threatsAffected
  • 6.17.0-1005.5~24.04.2 – 6.17.0-1020.20~24.04.1
10 affected builds
Fixed in–
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threatsAffected
  • 6.11.0-1008.8~24.04.1 – 6.11.0-1018.18~24.04.1
7 affected builds
Fixed in–
Ubuntu 24.04 LTSlinux-azure-6.14pkg:deb/ubuntu/linux-azure-6.14?arch=source&distro=nobleOther threatsAffected
  • 6.14.0-1010.10~24.04.1 – 6.14.0-1017.17~24.04.1
5 affected builds
Fixed in–
Ubuntu 24.04 LTSlinux-azure-6.17pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=nobleOther threatsAffected
  • 6.17.0-1008.8~24.04.1 – 6.17.0-1022.22
10 affected builds
Fixed in–
Ubuntu 24.04 LTSlinux-azure-fde-6.14pkg:deb/ubuntu/linux-azure-fde-6.14?arch=source&distro=nobleOther threatsAffected
  • 6.14.0-1012.12~24.04.1 – 6.14.0-1017.17~24.04.1
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix has been implemented in the Linux kernel to correct the kmap_local_page() usage in NTFS compressed I/O paths. Users should apply the updated kernel versions that include this fix. No additional mitigation steps are indicated beyond applying the official patch.

Description

A vulnerability in the Linux kernel's NTFS driver related to improper handling of kmap_local_page() usage in compressed I/O paths has been resolved. The issue involved discarding the address returned by kmap_local_page() and later accessing or unmapping the page incorrectly, which is invalid for high memory pages. The fix ensures proper mapping and unmapping of pages during decompression and removes unnecessary local mappings in certain write operations.

References

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