CVE-2026-97928
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)
How to fix
- Linux Linux6593494733ccaf691db7bd13801583d188409607, 30dacb56f07283a1acb353ce81baef31f85396b0, 241d7450cf75969cea450eb3e740cb9682f69c2f, 87ceb8cba73d0b3c4025ff42495bccd8164acaed or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | a68c7eaa7a8ffdec9287ba1561a668d674c20a13 ≤ v < 6593494733ccaf691db7bd13801583d188409607, a68c7eaa7a8ffdec9287ba1561a668d674c20a13 ≤ v < 30dacb56f07283a1acb353ce81baef31f85396b0, a68c7eaa7a8ffdec9287ba1561a668d674c20a13 ≤ v < 241d7450cf75969cea450eb3e740cb9682f69c2f, a68c7eaa7a8ffdec9287ba1561a668d674c20a13 ≤ v < 87ceb8cba73d0b3c4025ff42495bccd8164acaed, 6.10 | 6593494733ccaf691db7bd13801583d188409607, 30dacb56f07283a1acb353ce81baef31f85396b0, 241d7450cf75969cea450eb3e740cb9682f69c2f, 87ceb8cba73d0b3c4025ff42495bccd8164acaed |
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