Riskcovery

CVE-2024-26858

net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map

State
Published
Severity
Not scored
Published
Apr 17, 2024
Updated
May 23, 2026
Reserved
Feb 19, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map

Just simply reordering the functions mlx5e_ptp_metadata_map_put and mlx5e_ptpsq_track_metadata in the mlx5e_txwqe_complete context is not good enough since both the compiler and CPU are free to reorder these two functions. If reordering does occur, the issue that was supposedly fixed by 7e3f3ba97e6c ("net/mlx5e: Track xmit submission to PTP WQ after populating metadata map") will be seen. This will lead to NULL pointer dereferences in mlx5e_ptpsq_mark_ts_cqes_undelivered in the NAPI polling context due to the tracking list being populated before the metadata map.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 4d510506b46504664eacf8a44a9e8f3e54c137b8 to before d1f71615dbb305f14f3b756cce015d70d8667549Affected
  • 7e3f3ba97e6cc6fce5bf62df2ca06c8e59040167 to before 936ef086161ab89a7f38f7a0761d6a3063c3277eAffected
  • 7e3f3ba97e6cc6fce5bf62df2ca06c8e59040167 to before b7cf07586c40f926063d4d09f7de28ff82f62b2aAffected
  • a9d6c0c5a6bd9ca88e964f8843ea41bc085de866Affected
  • 6.6.3 to before 6.6.22Affected
  • 6.5.13 to before 6.6Affected
LinuxLinux
  • 6.7Affected
  • before 6.7Not affected
  • 6.6.22 through 6.6.*Not affected
  • 6.7.10 through 6.7.*Not affected
  • 6.8 and laterNot affected

References

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