Answer in brief
CVE-2026-98624 records a Unknown severity vulnerability in netfilter: nfnetlink_queue: hold nfnl mutex in event notifier. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <46432f2e76f7c385d82506304a2928e7d293289f || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <597320337c3da06c92a9e95cfc755da66fedc476 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <2e9be1302f25c9be51c2fb8c907bc6d8a1050e33 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <d559e06a5ab7c064100aafd5c826eadd0f1c6216 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <1d1184411599a7c2217560bab3bbe641c6d03b95 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <8137a39e08e838ced234044384740ceeb99ed388 || >=7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb <9461613afc59acef44a0071b0dd5075f6e993ffe | 46432f2e76f7c385d82506304a2928e7d293289f, 597320337c3da06c92a9e95cfc755da66fedc476, 2e9be1302f25c9be51c2fb8c907bc6d8a1050e33, d559e06a5ab7c064100aafd5c826eadd0f1c6216, 1d1184411599a7c2217560bab3bbe641c6d03b95, 07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1, 8137a39e08e838ced234044384740ceeb99ed388, 9461613afc59acef44a0071b0dd5075f6e993ffe |
| Linux/Linuxgeneric | 2.6.14 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
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.
Quoted source text, attributed separately from HOL analysis.