{"cve":"CVE-2021-47596","nvd":{"published":"2024-06-19T15:15:54.197","modified":"2026-06-17T04:17:50.790","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hns3: fix use-after-free bug in hclgevf_send_mbx_msg\n\nCurrently, the hns3_remove function firstly uninstall client instance,\nand then uninstall acceletion engine device. The netdevice is freed in\nclient instance uninstall process, but acceletion engine device uninstall\nprocess still use it to trace runtime information. This causes a use after\nfree problem.\n\nSo fixes it by check the instance register state to avoid use after free.","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/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542","https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4","https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0","https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542","https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:52:00.836172422+00:00"},"epss":{"cve":"CVE-2021-47596","score":0.00248,"percentile":0.16199,"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."]}