{"id":"CVE-2026-80982","title":"kernel: net/smc: fix use-after-free in smc_rx_pipe_buf_release() (CVE-2026-80982)","summary":"A flaw was found in the Linux kernel's Shared Memory Communications (SMC) network protocol. A race condition occurs when a network connection is closed while the system is still processing its receive buffer pages. This can lead to a use-a…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T19:24:23+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80982"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532370"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80982"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80982"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80982.mbox"},{"url":"https://git.kernel.org/stable/c/dadd97c8296b23aa816e91ed70041820ae087baa"},{"url":"https://git.kernel.org/stable/c/df441f3efbb50eb0f120b8de4bf441c31fb0551d"},{"url":"https://git.kernel.org/stable/c/6a644a7340df978785f3109d1e0726a982ce2c6f"},{"url":"https://git.kernel.org/stable/c/0761e49aa78c2f1362511054c6e9670653858837"},{"url":"https://git.kernel.org/stable/c/0926f59ca0f94120895b92180c636a48d0ed3a6d"},{"url":"https://git.kernel.org/stable/c/c924884743e948e25625b7fbf3ee2a9325a204a7"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00159,"epssPercentile":0.05519,"scores":{"vendor":7,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.454Z","slug":"CVE-2026-80982","body":"## Overview\n\nA flaw was found in the Linux kernel's Shared Memory Communications (SMC) network protocol. A race condition occurs when a network connection is closed while the system is still processing its receive buffer pages. This can lead to a use-after-free vulnerability, where the system attempts to access memory that has already been released. An attacker could potentially exploit this flaw to cause a denial of service, leading to system instability or crashes.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, 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 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80982.json)\n\n**kernel: net/smc: fix use-after-free in smc_rx_pipe_buf_release()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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 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- Red Hat Enterprise Linux 7\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204174,"id":"CVE-2026-80982","ts":1789490236057,"field":"cvss","old":"7.8","new":"7"},{"seq":183594,"id":"CVE-2026-80982","ts":1789356676027,"field":"cvss","old":"7.8","new":"4.7"},{"seq":183593,"id":"CVE-2026-80982","ts":1789356676027,"field":"severity","old":"high","new":"medium"},{"seq":153168,"id":"CVE-2026-80982","ts":1789285349382,"field":"cvss","old":null,"new":"7.8"},{"seq":153167,"id":"CVE-2026-80982","ts":1789285349382,"field":"severity","old":"none","new":"high"},{"seq":147329,"id":"CVE-2026-80982","ts":1789270210478,"field":"cvss","old":null,"new":"4.7"},{"seq":147328,"id":"CVE-2026-80982","ts":1789270210478,"field":"severity","old":"none","new":"medium"},{"seq":109074,"id":"CVE-2026-80982","ts":1789183730205,"field":"cvss","old":null,"new":"4.7"},{"seq":109073,"id":"CVE-2026-80982","ts":1789183730205,"field":"severity","old":"none","new":"medium"}]}