Riskcovery

CVE-2026-74559

xsk: drain continuation descs after overflow in xsk_build_skb()

State
Published
Severity
Not scored
Published
Aug 15, 2026
Updated
Oct 21, 2026
Reserved
Aug 15, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • cf24f5a5feeaae34c1a34d1e04f8ac697290427a to before ecd0d1cde0478c232a867f14ec99cf97aff5eb30Affected
  • cf24f5a5feeaae34c1a34d1e04f8ac697290427a to before ceb00cb87a22c42d20c39336213db2b843ca9e34Affected
  • cf24f5a5feeaae34c1a34d1e04f8ac697290427a to before 5e94d74e4f3baebaa083288f33b4be7ce0a34982Affected
  • cf24f5a5feeaae34c1a34d1e04f8ac697290427a to before bd44a6dcd4248883de90f5dad53ae80066e27096Affected
LinuxLinux
  • 6.6Affected
  • before 6.6Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.18.44 through 6.18.*Not affected
  • 7.1.8 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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