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Vulnerabilities CVE-2026-43339

CVE-2026-43339

High
Open
TLP:CLEAR

ipv6: prevent possible UaF in addrconf_permanent_addr()

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Description

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.

Details

CVSS Score
7.8
EPSS Score
0.12%

2.2th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 8, 2026
Last Modified
Aug 5, 2026
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