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CVE-2026-99130VulnerabilityPublished

Microsoft · io_uring/cancel: don't spin on local work the task can't run

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99130· Medium

Not known to be exploited · fixed in fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7 : update Microsoft when convenient.

Data as of 29 Oct 2026, 11:49 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7, 3005459e0ddfcef0f555b6e81f672f2c49a1c0aa, 94d13387b96e50a4288f7bbdfe401189246a11a1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 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 29 Oct 2026.

What to do

Upgrade Linux to fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7, 3005459e0ddfcef0f555b6e81f672f2c49a1c0aa or 94d13387b96e50a4288f7bbdfe401189246a11a1.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 360cd42c4e95ff06d8d7b0a54e42236c7e7c187f, < fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7
Fixed in
  • fddcf4c5321b3ea5f72166c3fd36a9d1c34f80c7
LinuxLinuxAffected
  • ≥ 360cd42c4e95ff06d8d7b0a54e42236c7e7c187f, < 3005459e0ddfcef0f555b6e81f672f2c49a1c0aa
Fixed in
  • 3005459e0ddfcef0f555b6e81f672f2c49a1c0aa
LinuxLinuxAffected
  • ≥ 360cd42c4e95ff06d8d7b0a54e42236c7e7c187f, < 94d13387b96e50a4288f7bbdfe401189246a11a1
Fixed in
  • 94d13387b96e50a4288f7bbdfe401189246a11a1
LinuxLinuxAffected
  • =6.4
Fixed in–

Description

CVE-2026-99130 is a vulnerability related to the io_uring subsystem, specifically in the cancel operation where the system may spin on local work that the task cannot run. The advisory references Microsoft products and support lifecycle but provides no detailed technical or impact information.

References

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