CVE-2021-47657 - CVE House
Back to Database
Status published Unknown CVE-2021-47657

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-47657

Credits & Attribution

No credits recorded in the NVD database.

References

More from Linux

View All →
CVE-2025-71315
drm/vkms: Convert to DRM's vblank timer
Unknown 0
CVE-2025-71314
drm/panthor: Recover from panthor_gpu_flush_caches() failures
Unknown 0
CVE-2025-71313
PCI: endpoint: Add missing NULL check for alloc_workqueue()
Unknown 0
CVE-2025-71312
fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super()
Unknown 0
CVE-2025-71311
fs/ntfs3: Initialize new folios before use
Unknown 0

Affected Vendor

Affected Software

Linux
Vulnerable Versions:
377f8331d0565e6f71ba081c894029a92d0c7e77, 244dbb4abe123779ec30e7c6ca283a681aba5c94, 1016c0f62f73d5d2c3a5d1ad1e1fb0cdce1993ae, 5.11.20, 5.12.3, 5.13, 0, 5.15.32, 5.16.18, 5.17.1, 5.18

Timeline

Official Publish: February 26th, 2025
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.