CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free.
git.kernel.org/linus/27cbf64a766e86f068ce6214f04c00ceb4db1af4
git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542
git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4
git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0
ubuntu.com/security/CVE-2021-47596
www.cve.org/CVERecord?id=CVE-2021-47596