CVE-2025-40175
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.
How to fix
- Linux Linux2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5, a3f8c0a273120fd2638f03403e786c3de2382e72 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4901e83a94ef0a8baf27916f31daf59b0a68547f ≤ v < 2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5, 4901e83a94ef0a8baf27916f31daf59b0a68547f ≤ v < a3f8c0a273120fd2638f03403e786c3de2382e72, 6.16 | 2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5, a3f8c0a273120fd2638f03403e786c3de2382e72 |
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