CVEvulnerability
CVE-2021-47659
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2025-02-26
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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.
Affected configurations
• linux linux kernel (>= 4.14 < 4.19.247)
• linux linux kernel (>= 4.20 < 5.4.198)
• linux linux kernel (>= 5.5 < 5.10.121)
• linux linux kernel (>= 5.11 < 5.15.46)
• linux linux kernel (>= 5.16 < 5.17.14)
• linux linux kernel (>= 5.18 < 5.18.3)
References
- https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33 Patch
- https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313 Patch
- https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269 Patch
- https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b Patch
- https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c Patch
- https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f Patch
- https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11 Patch