#VU90582 NULL pointer dereference in Linux kernel - CVE-2021-47202
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90582
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47202
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend() and of_thermal_set_trip_temp() functions in drivers/thermal/of-thermal.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd
- https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac
- https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86
- https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e
- https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.81
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.210