SB20251226225 - NULL pointer dereference in Linux kernel ipv4
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226225
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-2023-53987)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ping_get_idx() and ping_seq_next() functions in net/ipv4/ping.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/176cbb6da28f36506cc60a4bec4ab8df0c16713a
- https://git.kernel.org/stable/c/5a08a32e624908890aa0a2eb442bb6a7669891a8
- https://git.kernel.org/stable/c/ab5fb73ffa01072b4d8031cc05801fa1cb653bee
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.24
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3