CVE-2026-74565

Published: August 18, 2026Last modified: August 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: make nft_object rhltable per table The nft_object rhltable is global, this allows for accessing objects that are being dismangled from lookup path by other existing netns. Given the nft_obj_destroy() releases the object inmediately, this might lead to use-after-free of these objects that are being released. Make the existing rhltable per table to address this issue to deal with with the nft_rcv_nl_event() path too. Update nft_obj_lookup() to take the table as non-const, otherwise, compiler complains when passing the objname_ht to rhltable_lookup().

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References

• https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
• https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
• https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
• https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0