CVE-2021-47386 Affecting kernel-abi-stablelists package, versions <0:4.18.0-553.22.1.el8_10


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELABISTABLELISTS-8092001
  • published25 Sept 2024
  • disclosed24 Sept 2024

Introduced: 24 Sep 2024

CVE-2021-47386  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 kernel-abi-stablelists to version 0:4.18.0-553.22.1.el8_10 or higher.
This issue was patched in ALSA-2024:7000.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-abi-stablelists package and not the kernel-abi-stablelists package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field

If driver read val value sufficient for (val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 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 alignment]

CVSS Scores

version 3.1