CVE-2025-38392: Linux kernel · idpf: convert control queue mutex to a spinlock
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in dc6c3c2c9dfdaa3a3357f59a80a2904677a71a9a : update Linux kernel when convenient.
Data as of 5 Nov 2026, 21:20 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in dc6c3c2c9dfdaa3a3357f59a80a2904677a71a9a, b2beb5bb2cd90d7939e470ed4da468683f41baa3, 9a36715cd6bc6a6f16230e19a7f947bab34b3fe5
Exploitation evidence
Disclosed: evidence found.
CVE published 25 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 5 Nov 2026.
What to do
Upgrade Linux kernel to dc6c3c2c9dfdaa3a3357f59a80a2904677a71a9a, b2beb5bb2cd90d7939e470ed4da468683f41baa3 or 9a36715cd6bc6a6f16230e19a7f947bab34b3fe5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel source code as identified by the fixed commit hashes. Users should update their Linux kernel to a version that includes these fixes to resolve the issue. No additional mitigation is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's idpf driver related to the use of a mutex for the control queue lock has been fixed by converting the mutex to a spinlock. This change addresses a kernel warning triggered when VIRTCHNL2_CAP_MACFILTER is enabled, which indicated that a sleeping function was called from an invalid context. The fix ensures safe locking behavior during operations involving MAC filter management and DMA memory handling.