Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before 2987642c5213508c6c9e718324c0d5289a92c474; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before 65d1213baffa363f2eb1117b1dc7acc573b890f8; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before 875fa28690e93ed5296c31d3344556c6bb867234; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before 21ca24ba51a2c28bcc4df9d7e5a40b0eb66ab76d; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before e1aed617eb80b49eac2f8c7bb7a0990f641dd59b; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before b5fc86d753dd4c281a943b92f0eef02d31af03d7; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before a540f767642f75240a6c35f6a65b69e44cfcea9d; affected cf67cc9a29ac19c98bc4fa0e6d14b0c1f592d322 before d3968a0d85b211e197f2f4f06268a7031079e0d0 |
| Linux / Linux | affected 4.3; unaffected 0 before 4.3; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.14 through 6.18.*; unaffected 6.19.4 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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/e1aed617eb80b49eac2f8c7bb7a0990f641dd59b
- https://git.kernel.org/stable/c/b5fc86d753dd4c281a943b92f0eef02d31af03d7
- https://git.kernel.org/stable/c/a540f767642f75240a6c35f6a65b69e44cfcea9d
- https://git.kernel.org/stable/c/d3968a0d85b211e197f2f4f06268a7031079e0d0