{"id":"CVE-2026-99038","revision":"92f80fadd22c452985e7f8ee2d1d79d2","records":[{"revision":"92f80fadd22c452985e7f8ee2d1d79d2","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-99038","aliases":[],"title":"memstick: rtsx_usb_ms: complete requests after eject instead of dropping them","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmemstick: rtsx_usb_ms: complete requests after eject instead of dropping them\n\nmemstick_check() can pass its host->removing check just before\nrtsx_usb_ms_drv_remove() sets eject/removing. Its next request is then\nsilently dropped: rtsx_usb_ms_request() skips schedule_work() once eject\nis set, and drv_remove's cancel_work_sync() can also cancel a queued\nhandle_req before it picks the request up. Nobody completes\ncard->mrq_complete.\n\nOnce memstick core waits for requests without a timeout (\"memstick: core:\nwait for request completion before freeing card\"), this hangs removal:\nmemstick_check() never returns and memstick_remove_host() blocks in\nflush_workqueue():\n\n  INFO: task kworker/u10:3:65 blocked for more than 20 seconds.\n  Workqueue: kmemstick memstick_check\n   __wait_for_common\n   memstick_check\n\n  INFO: task kworker/1:1:33 blocked for more than 20 seconds.\n  Workqueue: usb_hub_wq hub_event\n   __flush_workqueue\n   memstick_remove_host\n   rtsx_usb_ms_drv_remove\n\nNever drop a request. rtsx_usb_ms_request() always schedules handle_req,\nand handle_req fails requests with -ENOMEDIUM once eject is set, without\ntouching the device. drv_remove flushes handle_req instead of cancelling\nit, and cancels it only after memstick_remove_host(), when no new\nrequest can arrive, so it cannot run on a freed host.\n\nThe host_mutex drain in drv_remove is removed: handle_req always leaves\nhost->req NULL when it finishes, so the drain never had anything to do,\nand it would now race with handle_req.","state":0,"publishedAt":"2026-10-23T12:21:56.333+00:00","modifiedAt":"2026-10-23T12:21:56.333+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/memstick/host/rtsx_usb_ms.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40\",\n                            \"lessThan\": \"f2c181e1d58e911804e14543b2f1cc6b23a0d4d6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40\",\n                            \"lessThan\": \"5b599e28aeb3684772aef64f46cc6f25f4c67128\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40\",\n                            \"lessThan\": \"d7e811c3a49cd5cff529c157df886719e09370ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40\",\n                            \"lessThan\": \"5616da0f92339328fa1472876df51555e15ad340\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40\",\n                            \"lessThan\": \"c96ca94425b076dc398d929366e378d1e22ec794\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/memstick/host/rtsx_usb_ms.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/f2c181e1d58e911804e14543b2f1cc6b23a0d4d6","https://git.kernel.org/stable/c/5b599e28aeb3684772aef64f46cc6f25f4c67128","https://git.kernel.org/stable/c/d7e811c3a49cd5cff529c157df886719e09370ec","https://git.kernel.org/stable/c/5616da0f92339328fa1472876df51555e15ad340","https://git.kernel.org/stable/c/c96ca94425b076dc398d929366e378d1e22ec794"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99038","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99038","identifiers":["CVE-2026-99038"]},"retained":false,"historicalAffected":[]}],"coverage":[]}