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CVE-2024-39508VulnerabilityPublished Updated

Microsoft · io_uring/io-wq: Use set_bit() and test_bit() at worker->flags

Affects MicrosoftSource GCVE Database

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Not known to be exploited.

Data as of 31 Oct 2026, 08:20 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Oct 2025

  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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =2.0
Fixed in–

Description

CVE-2024-39508 is a vulnerability related to the io_uring/io-wq component where the functions set_bit() and test_bit() should be used on worker->flags. The description does not provide further technical details or impact information.

References

Community reviews

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