CVE-2025-38311: Linux kernel · iavf: get rid of the crit lock
Source GCVE Database
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
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:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| 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.