Out-of-bounds read in Linux kernel - CVE-2021-47441
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90277
CSH Severity: 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-2021-47441
CWE-ID: CWE-125
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 an out-of-bounds read error within the MLXSW_THERMAL_TEMP_SCORE_MAX GENMASK(), mlxsw_thermal_set_cur_state() and mlxsw_thermal_init() functions in drivers/net/ethernet/mellanox/mlxsw/core_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/ae0993739e14a102d506aa09e11b0065f3144f10
- https://git.kernel.org/stable/c/e59d839743b50cb1d3f42a786bea48cc5621d254
- https://git.kernel.org/stable/c/df8e58716afb3bee2b59de66b1ba1033f2e26303
- https://git.kernel.org/stable/c/332fdf951df8b870e3da86b122ae304e2aabe88c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.155