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VULNERABILITIES

CVE-2021-47384 Details

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field If driver read tmp value sufficient for (tmp & 0x08) && (!(tmp & 0x80)) && ((tmp & 0x7) == ((tmp >> 4) & 0x7)) from device then Null pointer dereference occurs. (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers) Also lm75[] does not serve a purpose anymore after switching to devm_i2c_new_dummy_device() in w83791d_detect_subclients(). The patch fixes possible NULL pointer dereference by removing lm75[]. Found by Linux Driver Verification project (linuxtesting.org). [groeck: Dropped unnecessary continuation lines, fixed multi-line alignments]

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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/6cb01fe630eaffc5a2c3f7364436caddba286623 kernel.orgPatch
https://git.kernel.org/stable/c/746011193f44f97f8784edcf8327c587946745fc kernel.orgPatch
https://git.kernel.org/stable/c/7c4fd5de39f273626a2b0f3a446d2cc85cd47616 kernel.orgPatch
https://git.kernel.org/stable/c/dd4d747ef05addab887dc8ff0d6ab9860bbcd783 kernel.orgPatch
https://git.kernel.org/stable/c/6cb01fe630eaffc5a2c3f7364436caddba286623 CVEPatch

see all 8 references

Weakness Enumeration

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

Affected Products

ProductVersions
linux linux kernel
< 5.4.151
>= 5.5, < 5.10.71
>= 5.11, < 5.14.10
5.15 rc1
5.15 rc2

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:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47384
NVD Published Date:
May 21, 2024
NVD Last Modified:
Jun 17, 2026
Source:
kernel.org
CVE-2021-47384 Details - Not Deferred