Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: disallow multiple FENCE chunks in one submit amdgpu_cs_pass1() dispatches on chunk_id once per chunk without rejecting repeated ids. p->uf_bo is a single-slot field, so a submission carrying two AMDGPU_CHUNK_ID_FENCE chunks runs amdgpu_cs_p1_user_fence() twice, and the second run overwrites p->uf_bo with a freshly referenced BO without dropping the reference taken by the first. amdgpu_cs_parser_fini() only unrefs the final p->uf_bo, so every FENCE chunk but the last leaks a BO reference. The leaked BO outlives handle close and process exit. Reject duplicate FENCE chunks the same way commit fec5f8e8c6bc ("drm/amdgpu: disallow multiple BO_HANDLES chunks in one submit") did for p->bo_list. (cherry picked from commit 665b1fc2a1845206408f9a2c6da67101789edb82)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < 7e9954e7212042ec808b06181b365b14f00c6f0aaffectedd38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < 070229262ede37d17c4ea596650deb6e5eb5d106affectedd38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < 5f46322e0b84af29e10eb951ff45bd6ea40640deaffectedd38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < 71aa45f7bfe46fbc6f51e7832573ff49b6005feaaffectedd38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < e3ee74d6dbbe409eb99546a7b0a02b2782f9021daffectedd38ceaf99ed015f2a0b9af3499791bd3a3daae21 to < 931cd1d1baeae68e8eb2c23bc1f3d8934dca6241affected
Linux Linux
Default version status: affected
4.2affected0 to < 4.2unaffected6.1.185 to ≤ 6.1.*unaffected6.6.153 to ≤ 6.6.*unaffected6.12.105 to ≤ 6.12.*unaffected6.18.46 to ≤ 6.18.*unaffected7.1.10 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7e9954e7212042ec808b06181b365b14f00c6f0a ↗
- https://git.kernel.org/stable/c/070229262ede37d17c4ea596650deb6e5eb5d106 ↗
- https://git.kernel.org/stable/c/5f46322e0b84af29e10eb951ff45bd6ea40640de ↗
- https://git.kernel.org/stable/c/71aa45f7bfe46fbc6f51e7832573ff49b6005fea ↗
- https://git.kernel.org/stable/c/e3ee74d6dbbe409eb99546a7b0a02b2782f9021d ↗
- https://git.kernel.org/stable/c/931cd1d1baeae68e8eb2c23bc1f3d8934dca6241 ↗