SB20240702136 - Input validation error in Linux kernel ext4
Published: July 2, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240702136
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) Input validation error (CVE-ID: CVE-2021-46945)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the ext4_handle_error() function in fs/ext4/super.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/64e1eebe2131183174f4fbb6b1491355f96c6cde
- https://git.kernel.org/stable/c/1e9ea8f4637026b8e965128953f2da061ccae9c4
- https://git.kernel.org/stable/c/ac2f7ca51b0929461ea49918f27c11b680f28995
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13