{"id":"CVE-2026-98227","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: ms_block: destroy io_queue workqueue on removal\n\nmsb_init_disk() creates the per-card ordered workqueue msb->io_queue with\nalloc_ordered_workqueue()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: ms_block: destroy io_queue workqueue on removal\n\nmsb_init_disk() creates the per-card ordered workqueue msb->io_queue with\nalloc_ordered_workqueue(). It is to…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < 0ff795163f37109a134b5a421558530f8d091544","Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < 19c3da6621a253f1f8b937ed91bc22330a930d9c","Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < 9a2e7cdc0880e735aff0968ee402f2c92a992b9b","Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < 6611f78ec3fd4b33a00bfda20725b254a22979f6","Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < f222bb8c30cf5699c560b29179ff2bddcac1f950","Linux >= 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 < 90af7fde083e1b22c349c3a8b1626728e44e474c","Linux 3.12"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:09.963","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98227","references":[{"url":"https://git.kernel.org/stable/c/0ff795163f37109a134b5a421558530f8d091544","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/19c3da6621a253f1f8b937ed91bc22330a930d9c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6611f78ec3fd4b33a00bfda20725b254a22979f6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/90af7fde083e1b22c349c3a8b1626728e44e474c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9a2e7cdc0880e735aff0968ee402f2c92a992b9b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f222bb8c30cf5699c560b29179ff2bddcac1f950","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98227.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98227"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546524"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98227"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98227"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98227.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.437Z","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-772"],"epss":0.00173,"epssPercentile":0.06631,"slug":"CVE-2026-98227","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: ms_block: destroy io_queue workqueue on removal\n\nmsb_init_disk() creates the per-card ordered workqueue msb->io_queue with\nalloc_ordered_workqueue(). It is torn down with destroy_workqueue() only\non the init error path; msb_remove() never destroys it. msb_stop() merely\nflushes the queue, and neither msb_data_clear() nor put_disk() free it. As\na result every card insert/remove cycle leaks the workqueue and its\nkworker, exhausting kernel memory over repeated cycles.\n\nDestroy the workqueue in msb_remove() after the disk has been removed and\nthe queue drained.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98227.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":218432,"id":"CVE-2026-98227","ts":1791533727990,"field":"cvss","old":null,"new":"5.5"},{"seq":218431,"id":"CVE-2026-98227","ts":1791533727990,"field":"severity","old":"none","new":"medium"}]}