CVEvulnerability
CVE-2026-74705
10.0 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-08-22
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Description
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the saved UDP header pointer is no longer valid.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.
References
- https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f git.kernel.org
- https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55 git.kernel.org
- https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b git.kernel.org
- https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d git.kernel.org
- https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe git.kernel.org
- https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87 git.kernel.org
- https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442 git.kernel.org
- https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61 git.kernel.org