SB2025100890 - NULL pointer dereference in Linux kernel tipc
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025100890
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-2022-50555)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the tipc_conn_data_ready(), tipc_topsrv_listener_data_ready() and tipc_topsrv_stop() functions in net/tipc/topsrv.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/24b129aed8730e48f47d852d58d76825ab6f407c
- https://git.kernel.org/stable/c/32a3d4660b34ce49ac0162338ebe362098e2f5df
- https://git.kernel.org/stable/c/7a939503fc32bff4ed60800b73ff7fbb4aea2142
- https://git.kernel.org/stable/c/82cb4e4612c633a9ce320e1773114875604a3cce
- https://git.kernel.org/stable/c/ce69bdac2310152bb70845024d5d704c52aabfc3
- https://git.kernel.org/stable/c/cedb41664e27b2cae7e21487f1bee22dcd84037d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7