high
7.1
CWE
416
Advisory Published
CVE Published
Updated

CVE-2023-3567: Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

First published: Sun Jul 09 2023(Updated: )

A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. In this flaw an attacker with local user access may ead to a system crash or a leak of internal kernel information. Reference: <a href="https://www.spinics.net/lists/stable-commits/msg285184.html">https://www.spinics.net/lists/stable-commits/msg285184.html</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.2
6.2
Linux kernel<6.2.0
Linux kernel=6.2.0-rc1
Linux kernel=6.2.0-rc2
Linux kernel=6.2.0-rc3
Linux kernel=6.2.0-rc4
Linux kernel=6.2.0-rc5
Linux kernel=6.2.0-rc6
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=20.04
Ubuntu Linux=22.04
debian/linux
5.10.223-1
5.10.234-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1

Remedy

https://www.spinics.net/lists/stable-commits/msg285184.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-3567?

    CVE-2023-3567 has been rated as a high severity vulnerability due to its potential to cause a system crash or leak internal kernel information.

  • How do I fix CVE-2023-3567?

    To fix CVE-2023-3567, update to a kernel version that is 6.2 or later.

  • Which systems are affected by CVE-2023-3567?

    CVE-2023-3567 affects various versions of the Linux Kernel, including 6.2 and earlier versions.

  • What type of vulnerability is CVE-2023-3567?

    CVE-2023-3567 is a use-after-free vulnerability found in the vcs_read function within the Linux Kernel.

  • Can CVE-2023-3567 be exploited remotely?

    No, CVE-2023-3567 requires local user access to exploit.

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