netfilter: nfnetlink_queue: hold nfnl mutex in event notifier
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.
CVE-2026-98624
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98624
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "46432f2e76f7c385d82506304a2928e7d293289f",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "597320337c3da06c92a9e95cfc755da66fedc476",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "2e9be1302f25c9be51c2fb8c907bc6d8a1050e33",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "d559e06a5ab7c064100aafd5c826eadd0f1c6216",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "1d1184411599a7c2217560bab3bbe641c6d03b95",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "8137a39e08e838ced234044384740ceeb99ed388",
"versionType": "git"
},
{
"status": "affected",
"version": "7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb",
"lessThan": "9461613afc59acef44a0071b0dd5075f6e993ffe",
"versionType": "git"
}
],
"programFiles": [
"net/netfilter/nfnetlink_queue.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/nfnetlink_queue.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98624
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38644 · Revision 1
- Added to Heist Feed
- Publisher date