CVE-2026-74746
netfilter: flowtable: publish GC-visible tuple last
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: publish GC-visible tuple last nf_flow_table_iterate() only treats original-direction tuple nodes as owning entries. Publishing the original node first lets GC observe and free a flow while flow_offload_add() is still inserting the reply node. Publish the reply node first and the original node last so GC never sees a partially installed flow. KASAN can trigger slab-use-after-free read and write reports in the flowtable/rhashtable path (rht_deferred_worker, jhash, flow_offload_del, flow_offload_lookup, etc.).
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 26, 2026 |
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Affected Versions
Linux / Linux
ac2a66665e231847cab11b8c8e844ce43207dd2e < 0a00254585827f1695aa2700114af622ea754cfa ac2a66665e231847cab11b8c8e844ce43207dd2e < be345dcbddb4643a54252b954af974b16eda8f91 ac2a66665e231847cab11b8c8e844ce43207dd2e < 211ee5d998d92a7d548811939c65942d06c146e4 ac2a66665e231847cab11b8c8e844ce43207dd2e < d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2 ac2a66665e231847cab11b8c8e844ce43207dd2e < 972fdf7c4f5c282a239c88fea614b056c33dc025 ac2a66665e231847cab11b8c8e844ce43207dd2e < d9d3050a70efe217e73a0751e55fdae6a7092620 ac2a66665e231847cab11b8c8e844ce43207dd2e < d16b71231e65cb05daea2b45701fcf09cef041e7 ac2a66665e231847cab11b8c8e844ce43207dd2e < 2014ac62df9d45bb9a004a043e85df7be09ed780
Linux / Linux
4.16
References
git.kernel.org: https://git.kernel.org/stable/c/0a00254585827f1695aa2700114af622ea754cfa git.kernel.org: https://git.kernel.org/stable/c/be345dcbddb4643a54252b954af974b16eda8f91 git.kernel.org: https://git.kernel.org/stable/c/211ee5d998d92a7d548811939c65942d06c146e4 git.kernel.org: https://git.kernel.org/stable/c/d37917e7bebe078f3c17e47fd6fc1c9f6e8497b2 git.kernel.org: https://git.kernel.org/stable/c/972fdf7c4f5c282a239c88fea614b056c33dc025 git.kernel.org: https://git.kernel.org/stable/c/d9d3050a70efe217e73a0751e55fdae6a7092620 git.kernel.org: https://git.kernel.org/stable/c/d16b71231e65cb05daea2b45701fcf09cef041e7 git.kernel.org: https://git.kernel.org/stable/c/2014ac62df9d45bb9a004a043e85df7be09ed780