SB2025012038 - NULL pointer dereference in Linux kernel sctp
Published: January 20, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025012038
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-2025-21638)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the proc_sctp_do_alpha_beta() function in net/sctp/sysctl.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/15649fd5415eda664ef35780c2013adeb5d9c695
- https://git.kernel.org/stable/c/1b67030d39f2b00f94ac1f0af11ba6657589e4d3
- https://git.kernel.org/stable/c/7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6
- https://git.kernel.org/stable/c/c184bc621e3cef03ac9ba81a50dda2dae6a21d36
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10