CVE-2026-74710 PUBLISHED

xsk: require at least 16 bytes of TX metadata

Assigner: Linux
Reserved: 15.08.2026 Published: 22.08.2026 Updated: 22.08.2026

In the Linux kernel, the following vulnerability has been resolved:

xsk: require at least 16 bytes of TX metadata

AF_XDP accepts a TX metadata length as small as eight bytes, but every supported request needs the flags plus at least one eight-byte request field. Such short metadata also lets the kernel read beyond the registered area.

Require 16 bytes rather than sizeof(struct xsk_tx_metadata) to preserve compatibility with applications that do not use launch-time metadata.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 341ac980eab90ac1f6c22ee9f9da83ed9604d899 to 21b8536aee819792f1b4b38b9aacf2a073025d49 (excl.)
  • affected from 341ac980eab90ac1f6c22ee9f9da83ed9604d899 to 642c6e73fce17fdca93a5793c4d22359fda866d7 (excl.)
  • affected from 341ac980eab90ac1f6c22ee9f9da83ed9604d899 to cfb9d2976b277e554e28c165e3eff4b4a8ea10bd (excl.)
  • affected from 341ac980eab90ac1f6c22ee9f9da83ed9604d899 to 1bb30b181d9f0484e141f8411e15ed906d5c6780 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.8 is affected
  • unaffected from 0 to 6.8 (excl.)
  • unaffected from 6.12.104 to 6.12.* (incl.)
  • unaffected from 6.18.45 to 6.18.* (incl.)
  • unaffected from 7.1.9 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References