CVE-2026-23468

Published: April 14, 2026Last modified: April 14, 2026

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)

Status

References

• https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614
• https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd
• https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9