SB20240531226 - Out-of-bounds read in Linux kernel hwmon driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531226
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) Out-of-bounds read (CVE-ID: CVE-2021-47393)
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 mlxreg_fan_set_cur_state() function in drivers/hwmon/mlxreg-fan.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/5c6e0bce647d9cb32a17d58ffa669b3421fcc6ca
- https://git.kernel.org/stable/c/a6c42ae1530f94724d3c42cf91fe3d3c5e394f8a
- https://git.kernel.org/stable/c/76bbb482d33bfcd7e9070ecf594c9ec73e01c930
- https://git.kernel.org/stable/c/aa85fb7bde558bb2e364e85976b14b259c8b6fe8
- https://git.kernel.org/stable/c/e6fab7af6ba1bc77c78713a83876f60ca7a4a064
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.151