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LinuxVULNRICHMENT:CVE-2024-44985

HistorySep 04, 2024 - 7:54 p.m.

CVE-2024-44985 ipv6: prevent possible UAF in ip6_xmit()

2024-09-0419:54:34

Linux

github.com

linux kernel

vulnerability

ipv6

uaf

ip6_xmit

skb_expand_head

dst

idev

rcu_read_lock

AI Score

7.1

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

In the Linux kernel, the following vulnerability has been resolved:

ipv6: prevent possible UAF in ip6_xmit()

If skb_expand_head() returns NULL, skb has been freed
and the associated dst/idev could also have been freed.

We must use rcu_read_lock() to prevent a possible UAF.

References

git.kernel.org/stable/c/124b428fe28064c809e4237b0b38e97200a8a4a8

git.kernel.org/stable/c/2d5ff7e339d04622d8282661df36151906d0e1c7

git.kernel.org/stable/c/38a21c026ed2cc7232414cb166efc1923f34af17

git.kernel.org/stable/c/975f764e96f71616b530e300c1bb2ac0ce0c2596

git.kernel.org/stable/c/fc88d6c1f2895a5775795d82ec581afdff7661d1