In the Linux kernel, the following vulnerability has been resolved: lan966x: Fix sleeping in atomic context The following warning was seen when we… (CVE-2025-68320)
A vulnerability in the Linux kernel related to the lan966x driver has been resolved. The issue involved a mutex being used in an atomic context, which is incorrect and caused kernel warnings and potential instability. The fix replaces the mutex with a spinlock to prevent sleeping in atomic context. This vulnerability can lead to a denial of service due to kernel crashes or hangs.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's lan966x driver was caused by the use of a mutex in an atomic context, which is invalid because mutexes can sleep and atomic contexts must not sleep. This triggered kernel warnings and could cause system instability or crashes. The problem was identified through kernel warning messages during SSH connection attempts. The fix involved replacing the mutex with a spinlock, which is safe to use in atomic contexts. This resolves the issue by preventing sleeping in atomic context.
Potential Impact
The vulnerability does not affect confidentiality or integrity but can cause a denial of service by crashing or hanging the kernel when the invalid mutex usage occurs. This can disrupt device operation and availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to replace the mutex with a spinlock in the lan966x driver, resolving the issue. Since no explicit patch links or vendor advisories are provided, users should update to the latest Linux kernel versions where this fix is included. Patch status is not yet confirmed — check the official Linux kernel release notes or vendor advisories for current remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: lan966x: Fix sleeping in atomic context The following warning was seen when we… (CVE-2025-68320)
Description
A vulnerability in the Linux kernel related to the lan966x driver has been resolved. The issue involved a mutex being used in an atomic context, which is incorrect and caused kernel warnings and potential instability. The fix replaces the mutex with a spinlock to prevent sleeping in atomic context. This vulnerability can lead to a denial of service due to kernel crashes or hangs.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's lan966x driver was caused by the use of a mutex in an atomic context, which is invalid because mutexes can sleep and atomic contexts must not sleep. This triggered kernel warnings and could cause system instability or crashes. The problem was identified through kernel warning messages during SSH connection attempts. The fix involved replacing the mutex with a spinlock, which is safe to use in atomic contexts. This resolves the issue by preventing sleeping in atomic context.
Potential Impact
The vulnerability does not affect confidentiality or integrity but can cause a denial of service by crashing or hanging the kernel when the invalid mutex usage occurs. This can disrupt device operation and availability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to replace the mutex with a spinlock in the lan966x driver, resolving the issue. Since no explicit patch links or vendor advisories are provided, users should update to the latest Linux kernel versions where this fix is included. Patch status is not yet confirmed — check the official Linux kernel release notes or vendor advisories for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-f4gj-826g-pqfv
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68320"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d29c2644c7f8477cae
Added to database: 07/30/2026, 15:50:42 UTC
Last enriched: 07/30/2026, 18:54:18 UTC
Last updated: 09/10/2026, 19:38:47 UTC
Views: 14
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