SB20240531484 - NULL pointer dereference in Linux kernel thermal driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531484
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2021-47202)
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.
References
- 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