{"apiVersion":"1.0","identifier":"CVE-2026-74473","description":"In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer.","publishedAt":"2026-08-15T13:17:52","lastModifiedAt":"2026-08-19T17:21:04","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74473","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00525,"riskScore":1.03,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74473","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74473","en":"https://www.redsauce.net/en/cves/CVE-2026-74473","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74473","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74473","de":"https://www.redsauce.net/de/cves/CVE-2026-74473","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74473","el":"https://www.redsauce.net/el/cves/CVE-2026-74473"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74473"}}