CVE-2021-47659
MEDIUM severity · CVSS 5.5
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/plane: Move range check for format_count earlier While the check for format_count > 64 in __drm_universal_plane_init() shouldn't be hit (it's a WARN_ON), in its current position it will then leak the plane->format_types array and fail to call drm_mode_object_unregister() leaking the modeset identifier. Move it to the start of the function to avoid allocating those resources in the first place.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33Patch
- https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313Patch
- https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269Patch
- https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6bPatch
- https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3cPatch
- https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4fPatch
- https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11Patch