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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-27 | Updated 2026-06-05 | Assigner Linux

Product status

References

git.kernel.org/...c/2987642c5213508c6c9e718324c0d5289a92c474

git.kernel.org/...c/65d1213baffa363f2eb1117b1dc7acc573b890f8

git.kernel.org/...c/875fa28690e93ed5296c31d3344556c6bb867234

git.kernel.org/...c/21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d

git.kernel.org/...c/b5fc86d753dd4c281a943b92f0eef02d31af03d7

git.kernel.org/...c/a540f767642f75240a6c35f6a65b69e44cfcea9d

git.kernel.org/...c/d3968a0d85b211e197f2f4f06268a7031079e0d0

cve.org (CVE-2026-45956)

nvd.nist.gov (CVE-2026-45956)

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