{"id":"CVE-2024-56621","summary":"scsi: ufs: core: Cancel RTC work during ufshcd_remove()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Cancel RTC work during ufshcd_remove()\n\nCurrently, RTC work is only cancelled during __ufshcd_wl_suspend(). When\nufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to\nthis, any further trigger of the RTC work after ufshcd_remove() would\nresult in a NULL pointer dereference as below:\n\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000002a4\nWorkqueue: events ufshcd_rtc_work\nCall trace:\n _raw_spin_lock_irqsave+0x34/0x8c\n pm_runtime_get_if_active+0x24/0xb4\n ufshcd_rtc_work+0x124/0x19c\n process_scheduled_works+0x18c/0x2d8\n worker_thread+0x144/0x280\n kthread+0x11c/0x128\n ret_from_fork+0x10/0x20\n\nSince RTC work accesses the ufshcd internal structures, it should be cancelled\nwhen ufshcd is removed. So do that in ufshcd_remove(), as per the order in\nufshcd_init().","modified":"2026-04-02T12:24:57.575573Z","published":"2024-12-27T14:51:24.948Z","related":["USN-7379-2","USN-7380-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56621.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1695c4361d35b7bdadd7b34f99c9c07741e181e5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2e7a3bb0331efb292e0fb022c36bc592137f0520"},{"type":"WEB","url":"https://git.kernel.org/stable/c/57479e37d3f69efee2f0678568274db773284bc8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56621.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56621"},{"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":"06701a545e9a3c4e007cff6872a074bf97c40619"},{"fixed":"57479e37d3f69efee2f0678568274db773284bc8"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6bf999e0eb41850d5c857102535d5c53b2ede224"},{"fixed":"2e7a3bb0331efb292e0fb022c36bc592137f0520"},{"fixed":"1695c4361d35b7bdadd7b34f99c9c07741e181e5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56621.json"}}],"schema_version":"1.7.5"}