{"id":"CVE-2026-43339","revision":"634aa31af5e9496e9b7ef50d45cf73b6","records":[{"revision":"634aa31af5e9496e9b7ef50d45cf73b6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43339","aliases":[],"title":"ipv6: prevent possible UaF in addrconf_permanent_addr()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent possible UaF in addrconf_permanent_addr()\n\nThe mentioned helper try to warn the user about an exceptional\ncondition, but the message is delivered too late, accessing the ipv6\nafter its possible deletion.\n\nReorder the statement to avoid the possible UaF; while at it, place the\nwarning outside the idev->lock as it needs no protection.","state":0,"publishedAt":"2026-05-08T13:31:24.315+00:00","modifiedAt":"2026-10-19T19:16:26.883+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                        \"net/ipv6/addrconf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"eec49a33611f20336b357b3953df44f1a02049e8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"bacc7f31085c9820922f00bc7d79756ffa13123a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"7bfafa1b0cd582983ebec6bb20f0a435528fe567\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"25357b670afb5b517096da783abaa5cc4bf8359e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"3cd4efb5df72843dfac892d0b3c7a4a8bd926b65\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac\",\n                            \"lessThan\": \"fd63f185979b047fb22a0dfc6bd94d0cab6a6a70\",\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                        \"net/ipv6/addrconf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.253\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.203\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.168\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.134\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.81\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.22\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.12\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8","https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a","https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567","https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e","https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e","https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65","https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1","https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43339","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43339","identifiers":["CVE-2026-43339"]},"retained":false,"historicalAffected":[]}],"coverage":[]}