CVE-2026-45956
Description
In the Linux kernel, the following vulnerability has been resolved: drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl() vidi_connection_ioctl() retrieves the driver_data from drm_dev->dev to obtain a struct vidi_context pointer. However, drm_dev->dev is the exynos-drm master device, and the driver_data contained therein is not the vidi component device, but a completely different device. This can lead to various bugs, ranging from null pointer dereferences and garbage value accesses to, in unlucky cases, out-of-bounds errors, use-after-free errors, and more. To resolve this issue, we need to store/delete the vidi device pointer in exynos_drm_private->vidi_dev during bind/unbind, and then read this exynos_drm_private->vidi_dev within ioctl() to obtain the correct struct vidi_context pointer.
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 | 6.1.170-1 |
| debian | forky | fixed | 6.18.14-1 |
| debian | sid | fixed | 6.18.14-1 |
| debian | trixie | affected | |
| debian | bullseye | fixed | 5.10.257-1 |
References
- https://git.kernel.org/stable/c/2987642c5213508c6c9e718324c0d5289a92c474
- https://git.kernel.org/stable/c/65d1213baffa363f2eb1117b1dc7acc573b890f8
- https://git.kernel.org/stable/c/875fa28690e93ed5296c31d3344556c6bb867234
- https://git.kernel.org/stable/c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d
- https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7
- https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d
- https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0
- https://security-tracker.debian.org/tracker/CVE-2026-45956
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.