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head, the saved UDP header pointer is no longer valid.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 v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
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
https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87
https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442
https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-22 16:16

Updated : 2026-08-25 06:18

NVD link : CVE-2026-74705

Mitre link : CVE-2026-74705

CVE.ORG link : CVE-2026-74705

JSON object : View

Products Affected

No product.

CWE

No CWE.

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