CVE-2021-47657

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

Medium · published February 26, 2025

CVSS v3.1
5.5
EPSS
0%
Percentile
19.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00278 · 19.2th percentile
Published
2025-02-26T01:54Z
EPSS history
Timeline
  • 26 FEB 01:54Z
    drm/virtio: Ensure that objs is not NULL in virtio_gpu_array_put_free()
    cvelistv5