Tracker / CVE-2023-53559
CVE-2023-53559
High 7.8
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.19.1 → 4.14.324 |
| linux | linux_kernel · 4.15 → 4.19.293 |
| linux | linux_kernel · 4.20 → 5.4.255 |
| linux | linux_kernel · 5.11 → 5.15.128 |
| linux | linux_kernel · 5.16 → 6.1.47 |
| linux | linux_kernel · 5.5 → 5.10.192 |
| linux | linux_kernel · 6.2 → 6.4.12 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.