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Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-modules Open this link in a new tab

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  • Snyk ID SNYK-RHEL8-KERNELMODULES-7325403
  • published 21 Jun 2024
  • disclosed 20 Jun 2024
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Introduced: 20 Jun 2024

CVE-2022-48742 Open this link in a new tab
CWE-416 Open this link in a new tab

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules package and not the kernel-modules package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()

While looking at one unrelated syzbot bug, I found the replay logic in __rtnl_newlink() to potentially trigger use-after-free.

It is better to clear master_dev and m_ops inside the loop, in case we have to replay it.