Riskcovery

CVE-2025-40175

idpf: cleanup remaining SKBs in PTP flows

State
Published
Severity
Not scored
Published
Nov 12, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 4901e83a94ef0a8baf27916f31daf59b0a68547f to before 2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5Affected
  • 4901e83a94ef0a8baf27916f31daf59b0a68547f to before a3f8c0a273120fd2638f03403e786c3de2382e72Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.17.5 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

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