SB20251001193 - Input validation error in Linux kernel ipv6
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001193
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) Input validation error (CVE-ID: CVE-2023-53477)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the rt6_nlmsg_size() function in net/ipv6/route.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/4cc59f386991ec9374cb4bc83dbe1c0b5a95033f
- https://git.kernel.org/stable/c/aa75d826c221e8d48607aef33836cf872a159cf1
- https://git.kernel.org/stable/c/aba298b35619213ca787d08d472049627d8cd012
- https://git.kernel.org/stable/c/da26369377f0b671c14692e2d65ceb38131053e1
- https://git.kernel.org/stable/c/dcdddb5f490890d058ea1f194d661219e92fe88d
- https://git.kernel.org/stable/c/e11e4d524eba2d3c8fdf897d7ce3853f7573bae9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.18