{"id":"CVE-2026-74473","revision":null,"records":[{"revision":"2d2ce6f6e1a8461eb44d64148bcd4756","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74473","aliases":[],"title":"vxlan: use pskb_network_may_pull() in route_shortcircuit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use pskb_network_may_pull() in route_shortcircuit()\n\nroute_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr))\n(or ipv6hdr), which checks if bytes are available starting from skb->data.\n\nHowever, in vxlan_xmit(), skb->data points to the MAC header, so\nskb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20)\nonly checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of\nIP header), leaving the rest of the IP header potentially un-pulled in non-linear\nfrags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled\nlinear buffer length.\n\nFix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to\nthe length check to ensure the full network header is present in the linear buffer.","state":0,"publishedAt":"2026-08-15T12:27:09.382+00:00","modifiedAt":"2026-10-16T19:05:47.966+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/vxlan/vxlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"c419af4924c1593500a40519730ed98575d04a3e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"6bd0a3a1b5744166946f0c551a6665c3b46b05e4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"214ba43faf106cb06cd3dd30999c5c809c868b53\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"42887be7c4cf283cce02cd0fb6411221167c8b6c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"aa0d31376d574ac858a40078431a77127bf04ee4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"ee799977d7941dbfb11049e17edd9eaf4f8820f7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"4f3f96e771a20263635bb5e1307c112d613b4bbd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4f67addf158f98f8197e08974966b18480dc751\",\n \"lessThan\": \"26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/net/vxlan/vxlan_core.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.8\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.8\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.265\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.216\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.183\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.151\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.103\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.44\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.8\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/c419af4924c1593500a40519730ed98575d04a3e","https://git.kernel.org/stable/c/6bd0a3a1b5744166946f0c551a6665c3b46b05e4","https://git.kernel.org/stable/c/214ba43faf106cb06cd3dd30999c5c809c868b53","https://git.kernel.org/stable/c/42887be7c4cf283cce02cd0fb6411221167c8b6c","https://git.kernel.org/stable/c/aa0d31376d574ac858a40078431a77127bf04ee4","https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7","https://git.kernel.org/stable/c/4f3f96e771a20263635bb5e1307c112d613b4bbd","https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74473","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74473","identifiers":["CVE-2026-74473"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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