ipv6: prevent possible UaF in addrconf_permanent_addr()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359ehttps://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1ehttps://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123ahttps://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70