CVE-2023-32233 LPE

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

Once the PoC is started on a vulnerable system, it may leave that system in an unstable state with corrupted kernel memory. We strongly recommend to test the PoC on a dedicated system to avoid potential data corruptions.