CVE-2023-53559
ip_vti: fix potential slab-use-after-free in decode_session6
In the Linux kernel, the following vulnerability has been resolved:
ip_vti: fix potential slab-use-after-free in decode_session6
When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb ("xfrm6: Fix the nexthdr offset in
_decode_session6.") showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)->nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.
Productos afectados
Linux · Linux¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7ahttps://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0bhttps://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15cahttps://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1dhttps://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbdhttps://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32