{"id":"CVE-2026-89441","title":"kernel: mmc: via-sdmmc: cancel card-detect work on remove (CVE-2026-89441)","summary":"A flaw was found in the Linux kernel, specifically within the `mmc: via-sdmmc` driver responsible for managing SD and MultiMediaCard (MMC) devices. This vulnerability occurs during device removal, where a timing issue allows a process to a…","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":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T21:44:13+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89441.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89441.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89441"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532479"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89441"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89441"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89441.mbox"},{"url":"https://git.kernel.org/stable/c/57e5d877f898d5e5c9d672a77bb6bdd24f0d9bf5"},{"url":"https://git.kernel.org/stable/c/eaca730c6f5e3609df62a0469fb789235a93d276"},{"url":"https://git.kernel.org/stable/c/f7ff3027ef004a331ef911a4886f12bc2e996037"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00127,"epssPercentile":0.02715,"scores":{"vendor":4.1,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.475Z","slug":"CVE-2026-89441","body":"## Overview\n\nA flaw was found in the Linux kernel, specifically within the `mmc: via-sdmmc` driver responsible for managing SD and MultiMediaCard (MMC) devices. This vulnerability occurs during device removal, where a timing issue allows a process to attempt to access memory that has already been released. This unauthorized memory access can lead to system instability or cause the system to crash, resulting in a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, 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 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89441.json)\n\n**kernel: mmc: via-sdmmc: cancel card-detect work on remove** — 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 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\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\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\n## Remediation\n\nOut of support scope","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204112,"id":"CVE-2026-89441","ts":1789490231623,"field":"cvss","old":"4.1","new":"5.5"},{"seq":202917,"id":"CVE-2026-89441","ts":1789403732935,"field":"cvss","old":"7.8","new":"4.1"},{"seq":202916,"id":"CVE-2026-89441","ts":1789403732935,"field":"severity","old":"high","new":"medium"},{"seq":198064,"id":"CVE-2026-89441","ts":1789384321625,"field":"cvss","old":"4.1","new":"7.8"},{"seq":198063,"id":"CVE-2026-89441","ts":1789384321625,"field":"severity","old":"medium","new":"high"},{"seq":183576,"id":"CVE-2026-89441","ts":1789356675952,"field":"cvss","old":"7.8","new":"4.1"},{"seq":183575,"id":"CVE-2026-89441","ts":1789356675952,"field":"severity","old":"high","new":"medium"},{"seq":153222,"id":"CVE-2026-89441","ts":1789285349612,"field":"cvss","old":null,"new":"7.8"},{"seq":153221,"id":"CVE-2026-89441","ts":1789285349612,"field":"severity","old":"none","new":"high"},{"seq":147141,"id":"CVE-2026-89441","ts":1789270196516,"field":"cvss","old":null,"new":"4.1"},{"seq":147140,"id":"CVE-2026-89441","ts":1789270196516,"field":"severity","old":"none","new":"medium"},{"seq":108898,"id":"CVE-2026-89441","ts":1789183729455,"field":"cvss","old":null,"new":"4.1"},{"seq":108897,"id":"CVE-2026-89441","ts":1789183729455,"field":"severity","old":"none","new":"medium"}]}