{"cve":"CVE-2021-47049","nvd":{"published":"2024-02-28T09:15:40.417","modified":"2026-08-04T10:16:42.987","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: hv: vmbus: Use after free in __vmbus_open()\n\nThe \"open_info\" variable is added to the &vmbus_connection.chn_msg_list,\nbut the error handling frees \"open_info\" without removing it from the\nlist.  This will result in a use after free.  First remove it from the\nlist, and then free it.","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/2728f289b3270b0e273292b46c534421a33bbfd5","https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da","https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f","https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560","https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2021-47049","score":0.00234,"percentile":0.14405,"date":"2026-10-31"},"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."]}