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CVE-2026-98790VulnerabilityPublished Updated

Microsoft · perf: Fix race between perf_event_exit_task() and perf_pending_task()

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98790· Medium

Not known to be exploited · fixed in ffb684f2aa141eeb0caa6308422e7e05d1ded7c4 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in ffb684f2aa141eeb0caa6308422e7e05d1ded7c4, a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3, 524063fea29f8a841e49927ea7a8085194ad3ec2 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < ffb684f2aa141eeb0caa6308422e7e05d1ded7c4
Fixed in
  • ffb684f2aa141eeb0caa6308422e7e05d1ded7c4
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3
Fixed in
  • a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < 524063fea29f8a841e49927ea7a8085194ad3ec2
Fixed in
  • 524063fea29f8a841e49927ea7a8085194ad3ec2
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < 672b8a9ce8f51b991481dfde26fba5cc4340a91a
Fixed in
  • 672b8a9ce8f51b991481dfde26fba5cc4340a91a
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < 655acfa713bce9ae9c81a654459890c2f58cb4e8
Fixed in
  • 655acfa713bce9ae9c81a654459890c2f58cb4e8
LinuxLinuxAffected
  • ≥ 97ba62b278674293762c3d91f724f1bb922f04e0, < 81e61e3f8befa1bae3ec8e779d8ada5e5e362c21
Fixed in
  • 81e61e3f8befa1bae3ec8e779d8ada5e5e362c21

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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