CVE-2026-43339

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconf_permanent_addr() The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the statement to avoid the possible UaF; while at it, place the warning outside the idev->lock as it needs no protection.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e	Patch
https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1	Patch
https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65	Patch
https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567	Patch
https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e	Patch
https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a	Patch
https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8	Patch
https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc7::::::

History

No history.

Information

Published : 2026-05-08 14:16

Updated : 2026-06-17 10:49

NVD link : CVE-2026-43339

Mitre link : CVE-2026-43339

CVE.ORG link : CVE-2026-43339

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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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."}], "lastModified": "2026-06-17T10:49:24.753", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02FB4629-3CFA-4F2B-8699-141F5385D64A", "versionEndExcluding": "5.10.253", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2DDDCA1-6DAB-4018-B920-8F045DDD8D3B", "versionEndExcluding": "6.1.168", "versionStartIncluding": "5.16"}, {"criteria": 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