Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2021-47657 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA: CISA-ADPCVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/6b79f96f4a23846516e5e6e4dd37fc06f43a60dd kernel.orgPatch
https://git.kernel.org/stable/c/abc9ad36df16e27ac1c665085157f1a082d39bac kernel.orgPatch
https://git.kernel.org/stable/c/ac92b474eeeed75b8660374ba1d129a121c09da8 kernel.orgPatch
https://git.kernel.org/stable/c/b094fece3810c71ceee6f0921676cb65d4e68c5a kernel.orgPatch

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]
CWE-476NULL Pointer DereferenceCISA-ADP

Affected Products

ProductVersions
linux linux kernel
>= 5.11.20, < 5.12
>= 5.12.3, < 5.15.32
>= 5.16, < 5.16.18
>= 5.17, < 5.17.1

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47657
NVD Published Date:
Feb 26, 2025
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org