CVE-2026-74705

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head, the saved UDP header pointer is no longer valid.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.

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-25)

Published

2026-08-22

Modified

2026-10-16

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f
• https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55
• https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b
• https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d
• https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe

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