{"cve":"CVE-2024-56621","nvd":{"published":"2024-12-27T15:15:21.637","modified":"2026-06-17T08:12:34.323","status":"Modified","description":"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().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/1695c4361d35b7bdadd7b34f99c9c07741e181e5","https://git.kernel.org/stable/c/2e7a3bb0331efb292e0fb022c36bc592137f0520","https://git.kernel.org/stable/c/57479e37d3f69efee2f0678568274db773284bc8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:57:56.913276502+00:00"},"epss":{"cve":"CVE-2024-56621","score":0.002,"percentile":0.09934,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}