CVE-2026-46211
Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata() msm_ioctl_gem_info_get_metadata() always returns 0 regardless of errors. When copy_to_user() fails or the user buffer is too small, the error code stored in ret is ignored because the function unconditionally returns 0. This causes userspace to believe the ioctl succeeded when it did not. Additionally, kmemdup() can return NULL on allocation failure, but the return value is not checked. This leads to a NULL pointer dereference in the subsequent copy_to_user() call. Add the missing NULL check for kmemdup() and return ret instead of 0. Note that the SET counterpart (msm_ioctl_gem_info_set_metadata) correctly returns ret. Patchwork: https://patchwork.freedesktop.org/patch/714478/
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 |
|---|---|---|---|
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 7.0.9-1 |
| debian | sid | fixed | 7.0.9-1 |
| debian | trixie | fixed | 6.12.90-1 |
References
- https://git.kernel.org/stable/c/47cbfe2608314b833ad61a65827d8fb363bc2d2d
- https://git.kernel.org/stable/c/697e1a9559f6962f999cc4c748c2ffffcc0a7a7a
- https://git.kernel.org/stable/c/b079e85c91f446f29e808d8291189e897f1884ff
- https://git.kernel.org/stable/c/c57c861956b89f2e2528e6384d51e2dedd915809
- https://security-tracker.debian.org/tracker/CVE-2026-46211
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.