{"id":"CVE-2026-98752","title":"kernel: tty: port: fix tty_port_tty_vhangup() race (CVE-2026-98752)","summary":"A flaw was found in the Linux kernel's TTY (terminal) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) or potentially execute arbitrary code. A race condition during port disconnect and hangup routines a…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-366","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T03:43:05+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98752.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98752.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98752"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555122"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98752"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98752"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98752.mbox"},{"url":"https://git.kernel.org/stable/c/ce220b4cdf62f73db0c1940f968eb33b9899fdd0"},{"url":"https://git.kernel.org/stable/c/6d1a984afc3ca477dab3e51ec806671d443ad524"},{"url":"https://git.kernel.org/stable/c/6b7be3b9b857947e9c1338d4919d4ebd3b75e907"},{"url":"https://git.kernel.org/stable/c/017b18addbe8dcace1a569a00d40ed1ba1e03f4c"},{"url":"https://git.kernel.org/stable/c/b48820de8c1a596c5b99775524dfce73c6576c5d"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05986,"ingestedAt":"2026-10-18T16:47:32.498Z","slug":"CVE-2026-98752","body":"## Overview\n\nA flaw was found in the Linux kernel's TTY (terminal) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) or potentially execute arbitrary code. A race condition during port disconnect and hangup routines allows the kernel to release resources while they are still being accessed, resulting in memory corruption and system crashes.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98752.json)\n\n**kernel: tty: port: fix tty_port_tty_vhangup() race** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\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\nNot affected:\n\n- Red Hat Enterprise Linux 6\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228194,"id":"CVE-2026-98752","ts":1792758179882,"field":"cvss","old":null,"new":"4.7"},{"seq":228193,"id":"CVE-2026-98752","ts":1792758179882,"field":"severity","old":"none","new":"medium"}]}