Red Hat: CVE-2023-3390: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (Multiple Advisories)
Description
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97.
Solution(s)
- redhat-upgrade-kernel
- redhat-upgrade-kernel-rt
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