Riskcovery

CVE-2026-97928

drm/amdgpu: skip the VMID 0 flush for VRAM

State
Published
Severity
Not scored
Published
Sep 25, 2026
Updated
Oct 21, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

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

drm/amdgpu: skip the VMID 0 flush for VRAM

Clear-on-release only runs on VRAM, which amdgpu_ttm_map_buffer() reaches via its direct MC address without programming a GART window, yet the wipe still forces a VMID 0 flush. On GFX11 (e.g. Navi33) that spurious SDMA flush can wedge the engine; only flush when a GART window is actually used.

v2: Let amdgpu_ttm_map_buffer() return whether the VMID 0 flush is needed, and drive the clear and copy paths from that. (Christian) v3: Make the vm_needs_flush output parameter mandatory instead of allowing NULL. (Christian)

(cherry picked from commit a306e406e570b74318ff7d80e5b07b540ca1d3a9)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a68c7eaa7a8ffdec9287ba1561a668d674c20a13 to before 6593494733ccaf691db7bd13801583d188409607Affected
  • a68c7eaa7a8ffdec9287ba1561a668d674c20a13 to before 30dacb56f07283a1acb353ce81baef31f85396b0Affected
  • a68c7eaa7a8ffdec9287ba1561a668d674c20a13 to before 241d7450cf75969cea450eb3e740cb9682f69c2fAffected
  • a68c7eaa7a8ffdec9287ba1561a668d674c20a13 to before 87ceb8cba73d0b3c4025ff42495bccd8164acaedAffected
LinuxLinux
  • 6.10Affected
  • before 6.10Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.18.57 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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