SB2024060572 - NULL pointer dereference in Linux kernel cifs
Published: June 5, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060572
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-2021-47307)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the cifs_compose_mount_options() function in fs/cifs/cifs_dfs_ref.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/f7d1fa65e74263d11f90ddd33b4d4cd905a93759
- https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796
- https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d
- https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.53
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.135