CVE-2026-23468
drm/amdgpu: Limit BO list entry count to prevent resource exhaustion
Reported by linux · Published April 3, 2026
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)
EPSS 0.13% · 2.4th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.19.10, 6.18.20, 6.12.86, 6.6.140 |
| Linux | Linux | f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9, 6270b1a5dab94665d7adce3dc78bc9066ed28bdd, 5ce4a38e6c2488949e373d5066303f9c128db614 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21 |
| Linux | Linux | 4.2, 0, 6.1.175 |
| linux | linux_kernel | 4.2, 4.2, 4.2 |
| Linux | Linux | 0, *, * |
Timeline
- Apr 3, 2026 CVE Published
- May 18, 2026 EPSS Score (23 in total, the first dated here)
- Jun 2, 2026 Security Advisory (100 in total, the first dated here)
- Jun 13, 2026 Coalition ESS Score
- Aug 11, 2026 Distribution Patch (93 in total, the first dated here)
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