Linux kernel (nf_tables): Use-after-free in nft_chain_lookup_byid() - local root (Pwn2Own Vancouver chain)

CVE-2023-31248Kernel, userspace & hypervisorcurated

Impact

Use-after-free in nft_chain_lookup_byid() - local root (Pwn2Own Vancouver chain)

Who can reach it

Any tenant process in a container with CAP_NET_ADMIN in a userns

What to do

Livepatchable; otherwise drain + reboot

References

https://access.redhat.com/security/cve/CVE-2023-31248

This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.