{"id":"CVE-2026-43101","title":"ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()\n\nWe need to check __in6_dev_get() for possible NULL value, as\nsuggested by Yiming Qian.\n\nAlso a…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 34b8390ac0ba57004b90ea568ac06f50bf896a80","Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < f87aa5d1a7f56727a768757613a303b4245444a1","Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 4198aab6f000b4febb18ea820fea20634dd789c7","Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 3719c234fa94c37c955b1ecd3742ef280ec135e6","Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 4e65a8b8daa18d63255ec58964dd192c7fdd9f8b","Linux 5.15"],"published":"2026-05-06","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:40:03.216Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43101","references":[{"url":"https://git.kernel.org/stable/c/34b8390ac0ba57004b90ea568ac06f50bf896a80"},{"url":"https://git.kernel.org/stable/c/f87aa5d1a7f56727a768757613a303b4245444a1"},{"url":"https://git.kernel.org/stable/c/4198aab6f000b4febb18ea820fea20634dd789c7"},{"url":"https://git.kernel.org/stable/c/3719c234fa94c37c955b1ecd3742ef280ec135e6"},{"url":"https://git.kernel.org/stable/c/4e65a8b8daa18d63255ec58964dd192c7fdd9f8b"}],"tags":["cve.org"],"epss":0.00609,"epssPercentile":0.48205,"ingestedAt":"2026-10-21T12:48:53.648Z","slug":"CVE-2026-43101","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()\n\nWe need to check __in6_dev_get() for possible NULL value, as\nsuggested by Yiming Qian.\n\nAlso add skb_dst_dev_rcu() instead of skb_dst_dev(),\nand two missing READ_ONCE().\n\nNote that @dev can't be NULL.\n\n## Affected\n\n- `Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 34b8390ac0ba57004b90ea568ac06f50bf896a80`\n- `Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < f87aa5d1a7f56727a768757613a303b4245444a1`\n- `Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 4198aab6f000b4febb18ea820fea20634dd789c7`\n- `Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 3719c234fa94c37c955b1ecd3742ef280ec135e6`\n- `Linux >= 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 4e65a8b8daa18d63255ec58964dd192c7fdd9f8b`\n- `Linux 5.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}