Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.6, < 5.10.253 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359ePatch
- https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1Patch
- https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65Patch
- https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567Patch
- https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1ePatch
- https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123aPatch
- https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8Patch
- https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70Patch
FAQ
What is CVE-2026-43339?
CVE-2026-43339 is a vulnerability with a CVSS score of 7.8 (HIGH). 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, ...
How severe is CVE-2026-43339?
CVE-2026-43339 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43339?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.