CVE-2026-43400
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add upper bound check on user inputs in signal ioctl Huge input values in amdgpu_userq_signal_ioctl can lead to a OOM and could be exploited. So check these input value against AMDGPU_USERQ_MAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM. (cherry picked from commit be267e15f99bc97cbe202cd556717797cdcf79a5)
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.10-1 |
| debian | sid | fixed | 6.19.10-1 |
| debian | trixie | fixed | 0 |
| linux-kernel | affected | 6.18.19 | |
| linux-kernel | 7.0 | affected | |
| windows | affected | |
References
- https://git.kernel.org/stable/c/46630d966b99b0fc6cb01fef4110587f3375a0c0
- https://git.kernel.org/stable/c/6fff5204d8aa26b1be50b6427f833bd3e8899c4f
- https://git.kernel.org/stable/c/ea78f8c68f4f6211c557df49174c54d167821962
- https://www.suse.com/security/cve/CVE-2026-43400.html
- https://security-tracker.debian.org/tracker/CVE-2026-43400
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43400
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.