CVE-2021-47657

drm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free()

Description

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free() If virtio_gpu_object_shmem_init() fails (e.g. due to fault injection, as it happened in the bug report by syzbot), virtio_gpu_array_put_free() could be called with objs equal to NULL. Ensure that objs is not NULL in virtio_gpu_array_put_free(), or otherwise return from the function.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/b094fece3810c71ceee6f0921676cb65d4e68c5a patch
https://git.kernel.org/stable/c/ac92b474eeeed75b8660374ba1d129a121c09da8 patch
https://git.kernel.org/stable/c/abc9ad36df16e27ac1c665085157f1a082d39bac patch
https://git.kernel.org/stable/c/6b79f96f4a23846516e5e6e4dd37fc06f43a60dd patch

Frequently Asked Questions

What is the severity of CVE-2021-47657?
CVE-2021-47657 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47657?
To fix CVE-2021-47657, 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-2021-47657 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47657 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-2021-47657?
CVE-2021-47657 affects Linux Linux, Linux Linux.
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