Buffer Overflow Vulnerability in Linux Kernel Net/X25 Module

CVE-2026-31417

What is CVE-2026-31417?

A vulnerability present in the Linux kernel's net/x25 module affects packet accumulation due to a failure in checking the potential overflow of x25_sock.fraglen. If left unaddressed, this could lead to unstable system behavior during packet processing. To mitigate this risk, a corrective check has been implemented to prevent overflow and ensure that fraglen is properly reset when clearing the fragment_queue within x25_clear_queues(), enhancing the overall robustness of the packet handling mechanism.

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