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Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-modules-internal  (opens in a new tab)

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0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELMODULESINTERNAL-6272630
  • published1 Mar 2024
  • disclosed22 Feb 2024
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Introduced: 22 Feb 2024

CVE-2023-52445  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

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

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

media: pvrusb2: fix use after free on context disconnection

Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack.