netfilter: nfnetlink_queue: hold nfnl mutex in event notifier (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: hold nfnl mutex in event notifier We must serialize the release notifier and the config netlink function. A concurrent thread can issue close() which can call the release function while unrelated socket processes UNBIND request for same portid: Oops: general protection fault, [..] RIP: 0010:__instance_destroy+0x60/0x210 [nfnetlink_queue] Call Trace: nfqnl_recv_config+0x9b0/0xdc0 [nfnetlink_queue] nfnetlink_rcv_msg+0x7c2/0xeb0 ? __pfx_nfnetlink_rcv_msg+0x10/0x10 After this, parallel UNBIND and URELEASE events are impossible. This change isn't nice, but its the shortest fix given instances are not refcounted and the nfnetlink config callback drops the rcu read lock early due to need for sleeping allocations.
References
- https://git.kernel.org/stable/c/46432f2e76f7c385d82506304a2928e7d293289f
- https://git.kernel.org/stable/c/597320337c3da06c92a9e95cfc755da66fedc476
- https://git.kernel.org/stable/c/2e9be1302f25c9be51c2fb8c907bc6d8a1050e33
- https://git.kernel.org/stable/c/d559e06a5ab7c064100aafd5c826eadd0f1c6216
- https://git.kernel.org/stable/c/1d1184411599a7c2217560bab3bbe641c6d03b95
- https://git.kernel.org/stable/c/07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1
- https://git.kernel.org/stable/c/8137a39e08e838ced234044384740ceeb99ed388
- https://git.kernel.org/stable/c/9461613afc59acef44a0071b0dd5075f6e993ffe
European references
- ENISA EUVD · EUVD-2026-103538
- GCVE · GCVE-0-2026-98624
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < 46432f2e76f7c385d82506304a2928e7d293289f ; affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < 597320337c3da06c92a9e95cfc755da66fedc476 ; affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < 2e9be1302f25c9be51c2fb8c907bc6d8a1050e33 ; affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < d559e06a5ab7c064100aafd5c826eadd0f1c6216 ; affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < 1d1184411599a7c2217560bab3bbe641c6d03b95 ; affected 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb < 07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1 |
| Linux · Linux | affected 2.6.14 ; unaffected 0 < 2.6.14 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |