PT-2021-8174 · Linux+3 · Linux Kernel+3
David Collins
·
Published
2021-11-05
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Updated
2025-03-11
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CVE-2021-47202
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a NULL pointer dereference in the thermal component of the Linux kernel. Specifically, when a thermal zone is consuming a thermal sensor and that sensor device hasn't probed yet, attempting to set
trip point * temp for that thermal zone device can cause a NULL pointer dereference. This can lead to a kernel crash. The functions of thermal set trip temp, of thermal get temp, of thermal set emul temp, and of thermal get trend are affected. The vulnerability can be triggered by setting trip point * temp via the /sys/class/thermal/thermal zone87 interface.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse