{"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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-43339", "lastModified": "2026-05-12T14:10:27.343", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-05-08T14:16:43.777", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,eec49a33611f20336b357b3953df44f1a02049e8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,bacc7f31085c9820922f00bc7d79756ffa13123a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,7bfafa1b0cd582983ebec6bb20f0a435528fe567)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,25357b670afb5b517096da783abaa5cc4bf8359e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,3cd4efb5df72843dfac892d0b3c7a4a8bd926b65)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac,fd63f185979b047fb22a0dfc6bd94d0cab6a6a70)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T20:45:16.336505+00:00", "updated": "2026-05-11T11:00:26.518359+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}