Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xsk: drain continuation descs after overflow in xsk_build_skb() Fix generic xmit path multi-buffer logic when packets are either too big (count of descriptors exceed MAX_SKB_FRAGS) or an invalid descriptor is included in fragmented packet. Introduce xdp_sock::drain_cont and act upon this flag - when it is set, keep on consuming descriptors from AF_XDP Tx ring and put them directly onto Cq. Previously these descriptors were silently lost and could never be reached again.
References
- https://git.kernel.org/stable/c/5e94d74e4f3baebaa083288f33b4be7ce0a34982
- https://git.kernel.org/stable/c/bd44a6dcd4248883de90f5dad53ae80066e27096
- https://git.kernel.org/stable/c/ceb00cb87a22c42d20c39336213db2b843ca9e34
FAQ
What is CVE-2026-74559?
CVE-2026-74559 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: xsk: drain continuation descs after overflow in xsk_build_skb() Fix generic xmit path multi-buffer logic when packets are either t...
How severe is CVE-2026-74559?
CVSS scoring is not yet available for CVE-2026-74559. Check NVD for updates.
Is there a patch for CVE-2026-74559?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.