| Name | CVE-2026-74474 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4788-1, DSA-6466-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bookworm | 6.1.176-1 | vulnerable |
| bookworm (security) | 6.1.187-1 | vulnerable | |
| trixie (security), trixie | 6.12.107-1 | fixed | |
| forky | 7.2.6-1 | fixed | |
| sid | 7.2.7-1 | fixed | |
| linux-6.12 (PTS) | bookworm (security) | 6.12.107-1~deb12u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | trixie | 6.12.105-1 | DSA-6466-1 | ||
| linux | source | (unstable) | 7.1.8-1 | |||
| linux-6.12 | source | bookworm | 6.12.107-1~deb12u1 | DLA-4788-1 |
https://git.kernel.org/linus/b9553558b48db54ac9273e6b98d7263ef5c1a329 (7.2-rc6)