Buffer Overflow Vulnerability in Linux Kernel's AF_XDP Implementation

CVE-2026-74710

What is CVE-2026-74710?

The Linux kernel contains a vulnerability in the AF_XDP implementation where it accepts a transmission (TX) metadata length as small as eight bytes. This can lead to unintended memory access beyond the registered area, creating potential opportunities for misuse. To enhance security, the requirement has been adjusted to a minimum of 16 bytes of TX metadata, ensuring compatibility with applications operating without launch-time metadata. This adjustment is crucial in preventing buffer overflow and safeguarding kernel operations.

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