CVE-2026-74565
Last modified
CVE-2026-74565 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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().. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
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().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4d44175aa5bb5f68772b1eb0306554812294ca52, < 1948e4f85b855618b5b9a27265f98d816f4cb7cb; >= 4d44175aa5bb5f68772b1eb0306554812294ca52, < 63ba12b664a2cd3220ed43e22c717715f4cc2ae8; >= 4d44175aa5bb5f68772b1eb0306554812294ca52, < 7d4789b58761d9d48d9b5f5e7e0a510c3bbfb3af; >= 4d44175aa5bb5f68772b1eb0306554812294ca52, < f4f699790590bd0896c48a71e9232a65198f92f0 |
| Linux | Linux | 5.1 |
References
Timeline
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