SB20240530120 - Memory leak in Linux kernel ext4
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240530120
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) Memory leak (CVE-ID: CVE-2021-47116)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the ext4_mb_init_backend() function in fs/ext4/mballoc.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/2050c6e5b161e5e25ce3c420fef58b24fa388a49
- https://git.kernel.org/stable/c/04fb2baa0b147f51db065a1b13a11954abe592d0
- https://git.kernel.org/stable/c/a8867f4e3809050571c98de7a2d465aff5e4daf5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.43
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13