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-2021-47471 Details

Description

In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already be NULL when unloading the driver, in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from mxsfb_unload() leads to NULL pointer dereference. Since all we care about is masking the IRQ and mxsfb->base is still valid, just use that to clear and mask the IRQ.

Metrics

CVSS 3.x Severity and Vector Strings:

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/3cfc183052c3dbf8eae57b6c1685dab00ed3db4a kernel.orgPatch
https://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8 kernel.orgPatch
https://git.kernel.org/stable/c/f40c2281d2c0674d32ba732fee45222d76495472 kernel.orgPatch
https://git.kernel.org/stable/c/3cfc183052c3dbf8eae57b6c1685dab00ed3db4a CVEPatch
https://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8 CVEPatch

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer DereferenceCISA-ADP

Affected Products

ProductVersions
linux linux kernel
>= 5.10, < 5.10.76
>= 5.11, < 5.14.15
5.15 rc1
5.15 rc2
5.15 rc3

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47471
NVD Published Date:
May 22, 2024
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2021-47471 Details - Not Deferred