Vulnerability Description
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 Score
CRITICAL
References
- 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
FAQ
What is CVE-2026-74474?
CVE-2026-74474 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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(), ps...
How severe is CVE-2026-74474?
CVE-2026-74474 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-74474?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.