CVE-2026-74559 - xsk: drain continuation descs after overflow in xsk_build_skb()

CVE-2026-74559 - xsk: drain continuation descs after overflow in xsk_build_skb()

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/15/2026 - 16:26
CVE ID :CVE-2026-74559
Published : Aug. 15, 2026, 1:18 p.m. | 11 minutes ago
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.
Severity: 0.0 | NA
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