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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e Patch
- git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1 Patch
- git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65 Patch
- git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567 Patch
- git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e Patch
- git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a Patch
- git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8 Patch
- git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 13 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.