<p>There is no fixed version for <code>Centos:7</code> <code>perf</code>.</p>

Use After Free Affecting perf package, versions *

Threat Intelligence

0.04% (6^th percentile)

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Snyk ID SNYK-CENTOS7-PERF-6257981
published 21 Feb 2024
disclosed 20 Feb 2024

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Introduced: 20 Feb 2024

CVE-2023-52439 Open this link in a new tab CWE-416 Open this link in a new tab

How to fix?

There is no fixed version for Centos:7 perf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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

uio: Fix use-after-free in uio_open

core-1 core-2

uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev)

In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then:

After core-1 kfree idev, the core-2 will do use-after-free for idev.
When core-2 do uio_release and put_device, the idev will be double freed.

To address this issue, we can get idev atomic & inc idev reference with minor_lock.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

High
Availability (A)

High

Use After Free Affecting perf package, versions *

Severity

Based on CentOS security rating