Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: reject oversized IBs with per-ring packet limits On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through to ib->length_dw without a limit, while ring_emit_ib() encodes length into packet fields. Oversized values can corrupt adjacent control bits and destabilize command submission. Add a per-ring IB packet size limit helper and reject command submissions exceeding the corresponding dword limit before IB allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE, and apply the MM fallback limit for other ring types. (cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 67a5d905c17a5066b0f6f950da11da93d56d122b; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 6e164ba1057175fb8a370d8e05cbff5c57eac0c8; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 1474f3970d1afd303e12ff14d06808eabb371576; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 07fe270ec07c138a70afe7a81e115a85c35c545c; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before fd37f9dd5b5ab70a46fa7bc76623c0528d602b27 |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 6.6.160 through 6.6.*; unaffected 6.12.105 through 6.12.*; unaffected 6.18.46 through 6.18.*; unaffected 7.1.10 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/67a5d905c17a5066b0f6f950da11da93d56d122b
- https://git.kernel.org/stable/c/6e164ba1057175fb8a370d8e05cbff5c57eac0c8
- https://git.kernel.org/stable/c/1474f3970d1afd303e12ff14d06808eabb371576
- https://git.kernel.org/stable/c/07fe270ec07c138a70afe7a81e115a85c35c545c
- https://git.kernel.org/stable/c/fd37f9dd5b5ab70a46fa7bc76623c0528d602b27
ADP enrichment
No English description supplied.
No references supplied.