SB20250227192 - Input validation error in Linux kernel ipv4
Published: February 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250227192
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-2025-21766)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the out: kfree_skb_reason() and __ip_rt_update_pmtu() functions in net/ipv4/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/139512191bd06f1b496117c76372b2ce372c9a41
- https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a
- https://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4
- https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e
- https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.129