SB2024062480 - Buffer overflow in Linux kernel f2fs
Published: June 24, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024062480
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) Buffer overflow (CVE-ID: CVE-2021-47004)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the locate_dirty_segment(), get_free_segment(), __refresh_next_blkoff() and __allocate_new_segment() functions in fs/f2fs/segment.c, within the add_victim_entry() function in fs/f2fs/gc.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/105155a8146ddb54c119d8318964eef3859d109d
- https://git.kernel.org/stable/c/1e116f87825f01a6380286472196882746b16f63
- https://git.kernel.org/stable/c/211372b2571520e394b56b431a0705586013b3ff
- https://git.kernel.org/stable/c/61461fc921b756ae16e64243f72af2bfc2e620db
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13