{"id":"CVE-2026-63924","title":"ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()\n\nipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers.\nLet's recompute nh pointer to make su…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b3ac54e5c905f86d22b502eacb5686a282c5659f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 645b99b1a185c91a79bdac4c5de0f91b212d64f0","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e883eaa878f4337b5873c706efb5a192364ed18","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bddaa4dfc7f36e1ee343a0622f69288af2b9ace9","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 72af7beae774e46ed543f3f2f267bf0a141bfcdd","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c512e1c819dfbf6ae95ee7a44b65b9ad98979157","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2b56bbd928c030894c270cd33d60286326919458","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d47548a36639095939f4747d4c43f2271366f565","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T15:33:33.023391Z"},"published":"2026-07-19","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:12.332Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63924","references":[{"url":"https://git.kernel.org/stable/c/b3ac54e5c905f86d22b502eacb5686a282c5659f"},{"url":"https://git.kernel.org/stable/c/645b99b1a185c91a79bdac4c5de0f91b212d64f0"},{"url":"https://git.kernel.org/stable/c/9e883eaa878f4337b5873c706efb5a192364ed18"},{"url":"https://git.kernel.org/stable/c/bddaa4dfc7f36e1ee343a0622f69288af2b9ace9"},{"url":"https://git.kernel.org/stable/c/72af7beae774e46ed543f3f2f267bf0a141bfcdd"},{"url":"https://git.kernel.org/stable/c/c512e1c819dfbf6ae95ee7a44b65b9ad98979157"},{"url":"https://git.kernel.org/stable/c/2b56bbd928c030894c270cd33d60286326919458"},{"url":"https://git.kernel.org/stable/c/d47548a36639095939f4747d4c43f2271366f565"}],"tags":["cve.org"],"epss":0.00714,"epssPercentile":0.52736,"ingestedAt":"2026-10-16T17:24:46.778Z","slug":"CVE-2026-63924","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()\n\nipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers.\nLet's recompute nh pointer to make sure any change won't mess things up.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b3ac54e5c905f86d22b502eacb5686a282c5659f`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 645b99b1a185c91a79bdac4c5de0f91b212d64f0`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e883eaa878f4337b5873c706efb5a192364ed18`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bddaa4dfc7f36e1ee343a0622f69288af2b9ace9`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 72af7beae774e46ed543f3f2f267bf0a141bfcdd`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c512e1c819dfbf6ae95ee7a44b65b9ad98979157`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2b56bbd928c030894c270cd33d60286326919458`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d47548a36639095939f4747d4c43f2271366f565`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}