Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Limit BO list entry count to prevent resource exhaustion Userspace can pass an arbitrary number of BO list entries via the bo_number field. Although the previous multiplication overflow check prevents out-of-bounds allocation, a large number of entries could still cause excessive memory allocation (up to potentially gigabytes) and unnecessarily long list processing times. Introduce a hard limit of 128k entries per BO list, which is more than sufficient for any realistic use case (e.g., a single list containing all buffers in a large scene). This prevents memory exhaustion attacks and ensures predictable performance. Return -EINVAL if the requested entry count exceeds the limit (cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before c833d6c7199c5b5fca9ec95593acd539ec9c171c; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before e620378aab78d415bd8a15a2f91c145906520288; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 2723e6851309531ce61aed74e93a0cd268cc862a; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 5ce4a38e6c2488949e373d5066303f9c128db614; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9; affected d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 6270b1a5dab94665d7adce3dc78bc9066ed28bdd |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.20 through 6.18.*; unaffected 6.19.10 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c833d6c7199c5b5fca9ec95593acd539ec9c171c
- https://git.kernel.org/stable/c/e620378aab78d415bd8a15a2f91c145906520288
- https://git.kernel.org/stable/c/2723e6851309531ce61aed74e93a0cd268cc862a
- https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614
- https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9
- https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd