CVE-2026-43339 Details
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.
A use-after-free vulnerability has been addressed in the Linux kernel's IPv6 address management. The issue arose in the 'addrconf_permanent_addr' function, where a warning about an exceptional condition was delayed, allowing access to an IPv6 address after it could have been deleted. This vulnerability affects the Linux kernel stable group.
Users can upgrade to the latest version of the Linux kernel stable group, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e | kernel.org | Patch |
| https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e | kernel.org | Patch |
| https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a | kernel.org | Patch |
| https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.6, < 5.10.253 >= 5.11, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.134 >= 6.7, < 6.12.81 >= 6.13, < 6.18.22 >= 6.19, < 6.19.12 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | New CVE Received | kernel.org |