Riskcovery

CVE-2026-72328

accel/amdxdna: Fix potential amdxdna_umap lifetime race

State
Published
Severity
7.8 High
Published
Aug 15, 2026
Updated
Aug 17, 2026
Reserved
Aug 9, 2026

Read the record on cve.org

Description

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

accel/amdxdna: Fix potential amdxdna_umap lifetime race

amdxdna_umap_release() calls the blocking mmu_interval_notifier_remove() before removing the object from abo->mem.umap_list. If aie2_populate_range() runs concurrently, it may obtain a reference to an amdxdna_umap that is being released, leading to a potential use-after-free.

Use kref_get_unless_zero() in aie2_populate_range() when acquiring a reference. If the reference count has already dropped to zero, release is in progress and the entry is skipped.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • e486147c912f653ef4b60a6c7dbd4168a4c56a9f to before 267809e2c56fbea486f7250c8a4acddcc3c54dc5Affected
  • e486147c912f653ef4b60a6c7dbd4168a4c56a9f to before 91e8109ecffb925b6202d2737384df285b195bfbAffected
  • e486147c912f653ef4b60a6c7dbd4168a4c56a9f to before 14f172eff9c19f8043a9858845f33cd034f3a41eAffected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.18.40 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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