{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43339","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:56.003Z","datePublished":"2026-05-08T13:31:24.315Z","dateUpdated":"2026-05-11T22:22:39.430Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:22:39.430Z"},"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv6/addrconf.c"],"versions":[{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"eec49a33611f20336b357b3953df44f1a02049e8","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"bacc7f31085c9820922f00bc7d79756ffa13123a","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"7bfafa1b0cd582983ebec6bb20f0a435528fe567","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"25357b670afb5b517096da783abaa5cc4bf8359e","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"3cd4efb5df72843dfac892d0b3c7a4a8bd926b65","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1","status":"affected","versionType":"git"},{"version":"f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac","lessThan":"fd63f185979b047fb22a0dfc6bd94d0cab6a6a70","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv6/addrconf.c"],"versions":[{"version":"4.6","status":"affected"},{"version":"0","lessThan":"4.6","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.134","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.81","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.22","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.12","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8"},{"url":"https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a"},{"url":"https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567"},{"url":"https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e"},{"url":"https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e"},{"url":"https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65"},{"url":"https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1"},{"url":"https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70"}],"title":"ipv6: prevent possible UaF in addrconf_permanent_addr()","x_generator":{"engine":"bippy-1.2.0"}}}}