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.
Affected versions
Linux kernel versions
3.8
and later are affected. Fixed in
6.18.44,
7.1.8,
7.2-rc6
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74474?
CVE-2026-74474 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.8 onward and has been patched in 6.18.44, 7.1.8 and 7.2-rc6. CVE-2026-74474 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74474?
Yes. CVE-2026-74474 has been patched. Fixed versions include 6.18.44, 7.1.8 and 7.2-rc6. If you are running Linux kernel 3.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74474 actively exploited?
No. CVE-2026-74474 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.