CVE-2021-47659

drm/plane: Move range check for format_count earlier

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.

N/A

CVSS

Severity:

EPSS 0.05%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313
https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33
https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11
https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c
https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b
https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f
https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269

Frequently Asked Questions

What is the severity of CVE-2021-47659?: CVE-2021-47659 has not yet been assigned a CVSS score.
How to fix CVE-2021-47659?: To fix CVE-2021-47659, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47659 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-47659 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47659?: CVE-2021-47659 affects Linux Linux, Linux Linux.

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