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().
Fix
Vendor advisories in the News 1
- ZDI-26-686: Linux Kernel nftables Race Condition Local Privilege Escalation Vulnerability Zero Day Initiative: published advisories · 2026-09-14
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 5
- StatusReceived → PublishedNVD modified 2026-10-21 12:45
- References+1 references (now 7)NVD modified 2026-10-21 13:19
- StatusPublished → ReceivedNVD modified 2026-10-21 13:19
- StatusReceived → PublishedNVD modified 2026-10-21 12:45
- First seenCVSS 7.8NVD modified 2026-10-16 20:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 7
- https://git.kernel.org/stable/c/1948e4f85b855618b5b9a27265f98d816f4cb7cb
- https://git.kernel.org/stable/c/4b549d32d34ee765527e63726bb1af984876e776
- https://git.kernel.org/stable/c/523c881661dde67efb44fce38c8eed50a72a57c1
- https://git.kernel.org/stable/c/63ba12b664a2cd3220ed43e22c717715f4cc2ae8
- https://git.kernel.org/stable/c/71714a2cec6c6d79bbd425ad968f9d6a3e4a2066
- https://git.kernel.org/stable/c/7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af
- https://git.kernel.org/stable/c/f4f699790590bd0896c48a71e9232a65198f92f0