CVE-2025-21789

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved, specifically related to out-of-bounds access in IP checksum code for negative lengths on LoongArch and ARM64 architectures. The issue was caused by an undefined shift and an out-of-bounds read, introduced by a commit adding checksum optimization for 64-bit systems.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.