Use After Free Affecting kernel-core package, versions <0:5.14.0-284.73.1.el9_2
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-7449730
- published 15 Jul 2024
- disclosed 19 Jun 2024
Introduced: 19 Jun 2024
CVE-2021-47596 Open this link in a new tabHow to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-284.73.1.el9_2 or higher.
This issue was patched in RHSA-2024:4533.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
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.