CVE-2026-98624 (GCVE-0-2026-98624)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:19 – Updated: 2026-10-19 09:22
VLAI
Title
netfilter: nfnetlink_queue: hold nfnl mutex in event notifier
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 46432f2e76f7c385d82506304a2928e7d293289f (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 597320337c3da06c92a9e95cfc755da66fedc476 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 2e9be1302f25c9be51c2fb8c907bc6d8a1050e33 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < d559e06a5ab7c064100aafd5c826eadd0f1c6216 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 1d1184411599a7c2217560bab3bbe641c6d03b95 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 07a3ec8fdc5a1267c00cd6fd1cf8bbb5cda913c1 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 8137a39e08e838ced234044384740ceeb99ed388 (git)
Affected: 7af4cc3fa158ff1dda6e7451c7e6afa6b0bb85cb , < 9461613afc59acef44a0071b0dd5075f6e993ffe (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.14
Unaffected: 0 , < 2.6.14 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: hold nfnl mutex in event notifier\n\nWe must serialize the release notifier and the config netlink function.\nA concurrent thread can issue close() which can call the release function\nwhile unrelated socket processes UNBIND request for same portid:\n\nOops: general protection fault, [..]\nRIP: 0010:__instance_destroy+0x60/0x210 [nfnetlink_queue]\nCall Trace:\n nfqnl_recv_config+0x9b0/0xdc0 [nfnetlink_queue]\n nfnetlink_rcv_msg+0x7c2/0xeb0\n ? __pfx_nfnetlink_rcv_msg+0x10/0x10\n\nAfter this, parallel UNBIND and URELEASE events are impossible.\n\nThis change isn\u0027t nice, but its the shortest fix given instances\nare not refcounted and the nfnetlink config callback drops the\nrcu read lock early due to need for sleeping allocations."
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "cveId": "CVE-2026-98624",
    "datePublished": "2026-10-18T15:19:45.566Z",
    "dateReserved": "2026-09-25T10:25:14.360Z",
    "dateUpdated": "2026-10-19T09:22:52.337Z",
    "state": "PUBLISHED"
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          }
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        "id": "CVE-2026-98624",
        "lastModified": "2026-10-19T10:19:26.583",
        "metrics": {},
        "published": "2026-10-18T16:17:15.393",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-21T14:31:49+00:00",
      "cve": "CVE-2026-98624",
      "id": "CVE-2026-98624",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "250",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: nfnetlink_queue: hold nfnl mutex in event notifier",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98624.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-10-18T23:44:31Z",
      "cve": "CVE-2026-98624",
      "id": "CVE-2026-98624",
      "initial_release_date": "2026-10-18T23:44:31Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98624",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98624.json",
      "version": "2"
    }
  }
}



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  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.