CVE-2021-47657
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedFeb 26, 2025
First seenFeb 26, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.12, 5.15.32, 5.16.18, 5.17.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.11.20 ≤ v < 5.12, 5.12.3 ≤ v < 5.15.32, 5.16 ≤ v < 5.16.18, 5.17 ≤ v < 5.17.1 | 5.12, 5.15.32, 5.16.18, 5.17.1 |
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