CVE-2026-74474

In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() for transmit path header pulls In vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was being called to verify the availability of network layer headers (ARP, IPv6/ND, IP/IPv6 MDB keys). However, during transmit skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb->data rather than skb_network_offset(skb) + len, which can leave part of the network header in non-linear frags. Replace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly account for the MAC header offset.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/371425d4be7795e9158388af9eee0201e6047410
https://git.kernel.org/stable/c/6146901881f09ef063eb34ad389f63231f8486f5
https://git.kernel.org/stable/c/7076a34b6e33315dc160b4612bfea1c597495585
https://git.kernel.org/stable/c/94dee751aad627b3645d424b5d0c736d394573e9
https://git.kernel.org/stable/c/b9553558b48db54ac9273e6b98d7263ef5c1a329
https://git.kernel.org/stable/c/bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 13:17

Updated : 2026-09-14 12:17

NVD link : CVE-2026-74474

Mitre link : CVE-2026-74474

CVE.ORG link : CVE-2026-74474

JSON object : View

Products Affected

No product.

CWE

No CWE.

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