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CVE-2026-74318VulnerabilityPublished Updated

Microsoft · btrfs: fix deadlock cloning inline extent when using flushoncommit

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-74318· Medium

Not known to be exploited · fixed in ea3452726ccb6bcaa732f43cc57bb928eca3dd59 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:32 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in ea3452726ccb6bcaa732f43cc57bb928eca3dd59, 06283034cec0fa357cbd85784ef7d3f5b2ce0790, 532085d00eb54c074bdeae648b194765239f4d11 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < ea3452726ccb6bcaa732f43cc57bb928eca3dd59
Fixed in
  • ea3452726ccb6bcaa732f43cc57bb928eca3dd59
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < 06283034cec0fa357cbd85784ef7d3f5b2ce0790
Fixed in
  • 06283034cec0fa357cbd85784ef7d3f5b2ce0790
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < 532085d00eb54c074bdeae648b194765239f4d11
Fixed in
  • 532085d00eb54c074bdeae648b194765239f4d11
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < 18694c1ca40c8d7a6a3e593ed3d764b0e18d33cd
Fixed in
  • 18694c1ca40c8d7a6a3e593ed3d764b0e18d33cd
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < 50d1a47fb3c4f3ee6c581e6bc4f1fb8d7051c5d1
Fixed in
  • 50d1a47fb3c4f3ee6c581e6bc4f1fb8d7051c5d1
LinuxLinuxAffected
  • ≥ 05a5a7621ce66c142e081ffc24dd6ade6e912061, < 2aa37c8ef1092c6f088e23a90bffefc672831c09
Fixed in
  • 2aa37c8ef1092c6f088e23a90bffefc672831c09

Description

A vulnerability identified as CVE-2026-74318 involves a deadlock issue in the btrfs filesystem related to cloning inline extents when using the flushoncommit feature. The affected product is Microsoft software version 3.0. No CVSS score or detailed impact information is provided.

References

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