CVEvulnerability
CVE-2026-23468
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-04-03
- Last modified
- 2026-07-24
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
Description
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 configurations
• linux linux kernel (>= 4.2 < 6.6.140)
• linux linux kernel (>= 6.7 < 6.12.86)
• linux linux kernel (>= 6.13 < 6.18.20)
• linux linux kernel (>= 6.19 < 6.19.10)
• linux linux kernel 7.0
Related
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://git.kernel.org/stable/c/2723e6851309531ce61aed74e93a0cd268cc862a Patch
- https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614 Patch
- https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd Patch
- https://git.kernel.org/stable/c/c833d6c7199c5b5fca9ec95593acd539ec9c171c git.kernel.org
- https://git.kernel.org/stable/c/e620378aab78d415bd8a15a2f91c145906520288 Patch
- https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9 Patch