Use After Free Affecting kernel-debug-devel package, versions <0:5.14.0-427.26.1.el9_4


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ROCKY9-KERNELDEBUGDEVEL-7570907
  • published27 Jul 2024
  • disclosed19 Jun 2024

Introduced: 19 Jun 2024

CVE-2021-47596  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 kernel-debug-devel to version 0:5.14.0-427.26.1.el9_4 or higher.
This issue was patched in RLSA-2024:4583.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-devel package and not the kernel-debug-devel package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux: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.

CVSS Scores

version 3.1