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CVE-2026-98081VulnerabilityPublished Updated

Microsoft · btrfs: zoned: finish active block group cleanup if call_zone_finish() fails

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98081· Medium

Not known to be exploited · fixed in e1b168a53174b385e3548bfbd079513b22ac240c : update Microsoft when convenient.

Data as of 7 Nov 2026, 13:02 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in e1b168a53174b385e3548bfbd079513b22ac240c, a18a6b93a2843b9d103d3456bbd4b3f90282a379, 40370f02a1ca3760f8925ffcbe76eb4d91ea758d +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ d70cbdda75da3f258118a558c087157e073229fb, < e1b168a53174b385e3548bfbd079513b22ac240c
Fixed in
  • e1b168a53174b385e3548bfbd079513b22ac240c
LinuxLinuxAffected
  • ≥ d70cbdda75da3f258118a558c087157e073229fb, < a18a6b93a2843b9d103d3456bbd4b3f90282a379
Fixed in
  • a18a6b93a2843b9d103d3456bbd4b3f90282a379
LinuxLinuxAffected
  • ≥ d70cbdda75da3f258118a558c087157e073229fb, < 40370f02a1ca3760f8925ffcbe76eb4d91ea758d
Fixed in
  • 40370f02a1ca3760f8925ffcbe76eb4d91ea758d
LinuxLinuxAffected
  • ≥ d70cbdda75da3f258118a558c087157e073229fb, < 433d52b196a689b18dcfadc7cf6c784f0e5cc7c9
Fixed in
  • 433d52b196a689b18dcfadc7cf6c784f0e5cc7c9
LinuxLinuxAffected
  • ≥ d70cbdda75da3f258118a558c087157e073229fb, < 36b9cdab44848f25879ca625275c92b007f84653
Fixed in
  • 36b9cdab44848f25879ca625275c92b007f84653
LinuxLinuxAffected
  • =5.19
Fixed in–

Description

A vulnerability identified as CVE-2026-98081 affects the btrfs zoned block group cleanup process in Microsoft software versions 3.0 and 4.0. The issue involves incomplete cleanup when the call_zone_finish() function fails.

References

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