Red Hat: CVE-2023-4244: kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction (Multiple Advisories)
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
Solution(s)
- redhat-upgrade-kernel
- redhat-upgrade-kernel-rt
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