SB2024060106 - NULL pointer dereference in Linux kernel f2fs
Published: June 1, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060106
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) NULL pointer dereference (CVE-ID: CVE-2021-46982)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the f2fs_unlock_rpages(), f2fs_read_multi_pages() and f2fs_put_rpages() functions in fs/f2fs/compress.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/5639b73fd3bc6fc8ca72e3a9ac15aacaabd7ebff
- https://git.kernel.org/stable/c/64acb100fe3beb5d20184d0ae3307235bd3555c4
- https://git.kernel.org/stable/c/936158b15e2648253afb824d252c910c496d34b5
- https://git.kernel.org/stable/c/a949dc5f2c5cfe0c910b664650f45371254c0744
- 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