CVE-2026-74746 (GCVE-0-2026-74746)
Vulnerability from cvelistv5
Published
2026-08-26 14:36
Modified
2026-10-16 19:26
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.).
References
Impacted products
Vendor Product Version
Linux Linux Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
Version: ac2a66665e231847cab11b8c8e844ce43207dd2e
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