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Use After Free Affecting kernel-debug-devel package, versions <0:4.18.0-553.5.1.el8_10

Severity

 Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELDEBUGDEVEL-6270516
  • published 24 Feb 2024
  • disclosed 22 Feb 2024
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Introduced: 22 Feb 2024

CVE-2023-52445 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Centos:8 kernel-debug-devel to version 0:4.18.0-553.5.1.el8_10 or higher.

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 Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
Expand this section

NVD

7.8 high
  • 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
Expand this section

Red Hat

3 low
Expand this section

SUSE

6.3 medium