high
7.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2022-3239: Use After Free

First published: Tue Feb 22 2022(Updated: )

A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers em28xx_usb_probe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:4.18.0-477.10.1.rt7.274.el8_8
0:4.18.0-477.10.1.rt7.274.el8_8
redhat/kernel<0:4.18.0-477.10.1.el8_8
0:4.18.0-477.10.1.el8_8
redhat/kernel<0:5.14.0-162.6.1.el9_1
0:5.14.0-162.6.1.el9_1
redhat/kernel-rt<0:5.14.0-162.6.1.rt21.168.el9_1
0:5.14.0-162.6.1.rt21.168.el9_1
redhat/Linux kernel<5.18
5.18
Linux Kernel>=3.15<4.14.295
Linux Kernel>=4.15<4.19.238
Linux Kernel>=4.20<5.4.189
Linux Kernel>=5.5<5.10.110
Linux Kernel>=5.11<5.15.33
Linux Kernel>=5.16<5.16.19
Linux Kernel>=5.17<5.17.2
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1

Remedy

To mitigate this issue, prevent module em28xx from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c08eadca1bdfa099e20a32f8fa4b52b2f672236d

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-3239?

    CVE-2022-3239 is rated as a high-severity vulnerability due to its potential for privilege escalation and system crashes.

  • How do I fix CVE-2022-3239?

    To fix CVE-2022-3239, update your Linux kernel to versions 0:4.18.0-477.10.1.rt7.274.el8_8, 0:5.14.0-162.6.1.el9_1, or any versions specified in the remediation list.

  • Who is affected by CVE-2022-3239?

    CVE-2022-3239 affects users of the Linux kernel, specifically those with Empia 28xx based TV cards and certain kernel versions.

  • What are the potential impacts of CVE-2022-3239?

    The potential impacts of CVE-2022-3239 include system crashes and the potential for local users to escalate their privileges.

  • How can I check if I'm vulnerable to CVE-2022-3239?

    You can check if you are vulnerable to CVE-2022-3239 by verifying your Linux kernel version and identifying if it falls within the vulnerable ranges.

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