cve-2026-31630

About this tag
CVE-2026-31630 is a Linux kernel vulnerability in the AF_RXRPC procfs code, where socket addresses are formatted into fixed 50-byte stack buffers, but an IPv6 address with port can require 51 bytes including the terminating NUL. This off-by-one flaw can lead to buffer overflows in diagnostic paths. The NVD published the record on April 24, 2026, but had not yet assigned a CVSS score at publication time. Administrators should assess urgency from kernel commits, distribution advisories, and local exposure. This tag covers discussions about the vulnerability, its fix, and the broader lesson that buffer sizing remains critical even in rarely used diagnostic code paths.

  1. CVE-2026-31630: Linux Kernel Procfs Off-By-One Fix and Buffer Sizing Lesson

    CVE-2026-31630 is a small-looking Linux kernel fix with a larger lesson: buffer sizing still matters, even in diagnostic paths that most users never touch. The flaw sits in the AF_RXRPC procfs code, where socket addresses were formatted into fixed 50-byte stack buffers even though a current...
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