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VulnerabilityPublished Updated

CVE-2025-38311: Linux kernel · iavf: get rid of the crit lock

Source GCVE Database

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Authoritative record:CVE-2025-38311· Medium

Not known to be exploited · CVSS 5.5 Medium · fixed in 620ab4d6215de0b25227f9fff1a8c7fb66837cb8 : update Linux kernel when convenient.

Data as of 13 Nov 2026, 19:59 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in 620ab4d6215de0b25227f9fff1a8c7fb66837cb8, 120f28a6f314fef7f282c99f196923fe44081cad, 6.5 +1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Jul 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 13 Nov 2026.

What to do

Upgrade Linux kernel to 620ab4d6215de0b25227f9fff1a8c7fb66837cb8, 120f28a6f314fef7f282c99f196923fe44081cad, 6.5 or 6.2.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=6.1.42 <6.2
  • >=6.4.7 <6.5
Fixed in
  • 620ab4d6215de0b25227f9fff1a8c7fb66837cb8
  • 120f28a6f314fef7f282c99f196923fe44081cad
  • 6.5
  • 6.2
LinuxLinuxAffected
  • =6.5
Fixed in–

AI-suggested

A fix is available that removes the crit_lock and replaces it with the netdev_lock in the iavf driver. Users should apply the updated Linux kernel versions containing this patch to resolve the deadlock issues. Since this is a kernel-level fix, upgrading to the patched kernel release is the recommended remediation. No alternative mitigations or workarounds are indicated.

Description

CVE-2025-38311 addresses a locking issue in the iavf driver of the Linux kernel. The vulnerability involves problematic locking logic related to the crit_lock, which could lead to deadlocks during certain operations such as VF removal. The fix replaces the crit_lock with the netdev_lock, which simplifies synchronization and avoids circular locking dependencies. This change resolves deadlock warnings reported by Lockdep and improves the scheduling and task handling within the iavf driver.

References

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