{"id":"CVE-2026-98580","title":"kernel: nfc: llcp: Fix race condition in accept_queue lifecycle (CVE-2026-98580)","summary":"A flaw was found in the Linux kernel's Near Field Communication (NFC) Logical Link Control Protocol (LLCP) implementation. A race condition occurs during concurrent socket release and connection accept operations due to improper lock synch…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Linux","affected":["Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < 54adcabb0f1deef1bdae5fc64779ed6d442721c9","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < 7c938aad5108382c6ad7453c4b5ee8ae3f3252ed","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < d2093a0981138876212bc5f473bdbfba0786e064","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < 41256821762a7114906b178826d17098e2fa5992","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < 53867f6acb1af7f12d6485fa8a2819318f89083b","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < da8a07757383614a8380a0f7dd54749d2687b82e","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < d5e1c92d09caed19f2988739695ce611a86ba6f8","Linux >= 50b78b2a6500d0e97c204c1b6c51df8c17358bbe < c3eef2f988a3db9690369d7cef9a3344dd9788d3","Linux 3.7"],"published":"2026-10-18","updated":"2026-10-20","sourceUpdated":"2026-10-20T03:49:41+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98580.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98580.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98580"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554909"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98580"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98580"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98580.mbox"},{"url":"https://git.kernel.org/stable/c/54adcabb0f1deef1bdae5fc64779ed6d442721c9"},{"url":"https://git.kernel.org/stable/c/7c938aad5108382c6ad7453c4b5ee8ae3f3252ed"},{"url":"https://git.kernel.org/stable/c/d2093a0981138876212bc5f473bdbfba0786e064"},{"url":"https://git.kernel.org/stable/c/41256821762a7114906b178826d17098e2fa5992"},{"url":"https://git.kernel.org/stable/c/53867f6acb1af7f12d6485fa8a2819318f89083b"},{"url":"https://git.kernel.org/stable/c/da8a07757383614a8380a0f7dd54749d2687b82e"},{"url":"https://git.kernel.org/stable/c/d5e1c92d09caed19f2988739695ce611a86ba6f8"},{"url":"https://git.kernel.org/stable/c/c3eef2f988a3db9690369d7cef9a3344dd9788d3"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00216,"epssPercentile":0.11997,"ingestedAt":"2026-10-18T15:45:12.254Z","slug":"CVE-2026-98580","body":"## Overview\n\nA flaw was found in the Linux kernel's Near Field Communication (NFC) Logical Link Control Protocol (LLCP) implementation. A race condition occurs during concurrent socket release and connection accept operations due to improper lock synchronization. A local attacker could exploit this flaw to cause a use-after-free or null-pointer dereference, leading to a denial of service (DoS) or potentially privilege escalation.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98580.json)\n\n**kernel: nfc: llcp: Fix race condition in accept_queue lifecycle** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225767,"id":"CVE-2026-98580","ts":1792498447468,"field":"cvss","old":null,"new":"5.5"},{"seq":225766,"id":"CVE-2026-98580","ts":1792498447468,"field":"severity","old":"none","new":"medium"}]}