Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: idpf: cleanup remaining SKBs in PTP flows When the driver requests Tx timestamp value, one of the first steps is to clone SKB using skb_get. It increases the reference counter for that SKB to prevent unexpected freeing by another component. However, there may be a case where the index is requested, SKB is assigned and never consumed by PTP flows - for example due to reset during running PTP apps. Add a check in release timestamping function to verify if the SKB assigned to Tx timestamp latch was freed, and release remaining SKBs.
References
- https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5
- https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72
FAQ
What is CVE-2025-40175?
CVE-2025-40175 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: idpf: cleanup remaining SKBs in PTP flows When the driver requests Tx timestamp value, one of the first steps is to clone SKB usin...
How severe is CVE-2025-40175?
CVSS scoring is not yet available for CVE-2025-40175. Check NVD for updates.
Is there a patch for CVE-2025-40175?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.