{"cve":"CVE-2021-47357","nvd":{"published":"2024-05-21T15:15:22.000","modified":"2026-06-17T04:17:17.067","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\natm: iphase: fix possible use-after-free in ia_module_exit()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/1c72e6ab66b9598cac741ed397438a52065a8f1f","https://git.kernel.org/stable/c/89ce0b0747f319eb70f85bc820dcc43cebbd5417","https://git.kernel.org/stable/c/9e161687855175334ca93c6c3ccb221731194479","https://git.kernel.org/stable/c/a832ee2f2145f57443b2d565f8cb5490e8339f42","https://git.kernel.org/stable/c/b58d246a058ae88484758cd4ab27b3180fd5ecf8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47357","score":0.00247,"percentile":0.16022,"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."]}