{"id":"CVE-2026-90029","summary":"usb: storage: realtek_cr: fix use-after-free on disconnect","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: storage: realtek_cr: fix use-after-free on disconnect\n\nrealtek_cr_destructor() calls timer_delete() before the chip containing\nthe timer is freed. The timer callback may still be running and can\nrearm itself, resulting in a use-after-free.\n\nUse timer_shutdown_sync() to wait for the callback and prevent further\nrearming. Do this unconditionally because ss_en may be changed after\nthe timer is armed.\n\nMove timer_setup() into init_realtek_cr() so the timer is initialized\nbefore any failure path can invoke the destructor.\n\nFound by static analysis.","modified":"2026-09-18T03:48:35.060909126Z","published":"2026-09-16T10:33:31.117Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90029.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c4e2f964c65dea4ea22386799d5fb10ef1e3e54"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cae9dbba6adae21a04a3bd045e07b489847ff2c6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90029.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90029"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e931830bb877e2aad9a1be83506f9bdb26c91e4e"},{"fixed":"7c4e2f964c65dea4ea22386799d5fb10ef1e3e54"},{"fixed":"cae9dbba6adae21a04a3bd045e07b489847ff2c6"},{"fixed":"4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90029.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.1.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90029.json"}}],"schema_version":"1.9.0"}