CVE-2021-47657: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 5.11.20, before 5.12 (fixed in 5.12); from 5.12.3, before 5.15.32 (fixed in 5.15.32); from 5.16, before 5.16.18 (fixed in 5.16.18); from 5.17, before 5.17.1 (fixed in 5.17.1)

Published 2025-02-26. Last modified 2026-06-17.