CVE-2026-74705 — udp: fix potential use-after-free in tunnel segmentation
In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header bef…
Published: 2026-08-22 · CVSS: 10.0 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head, the saved UDP header pointer is no longer valid. Get the UDP header after the pull to avoid a potential use-after-free.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7