high
7.8
CWE
190
Advisory Published
CVE Published
Updated

CVE-2020-13974: Integer Overflow

First published: Sun Mar 22 2020(Updated: )

A flaw integer overflow in the Linux kernel's virtual terminal keyboard driver was found in the way the user sends some specific keyboard code multiple times. A local user could use this flaw to crash the system or possibly escalate their privileges on the system.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/kernel-rt<0:4.18.0-372.9.1.rt7.166.el8
0:4.18.0-372.9.1.rt7.166.el8
redhat/kernel<0:4.18.0-372.9.1.el8
0:4.18.0-372.9.1.el8
redhat/kernel<5.8
5.8
Linux Kernel<4.4.227
Linux Kernel>=4.5<4.9.227
Linux Kernel>=4.10<4.14.184
Linux Kernel>=4.15<4.19.128
Linux Kernel>=4.20<5.4.46
Linux Kernel>=5.5<5.6.18
Linux Kernel>=5.7<5.7.2
Debian GNU/Linux=9.0
Ubuntu Linux=14.04
Ubuntu Linux=16.04
Ubuntu Linux=18.04
Ubuntu Linux=20.04
Linux kernel<4.4.227
Linux kernel>=4.5<4.9.227
Linux kernel>=4.10<4.14.184
Linux kernel>=4.15<4.19.128
Linux kernel>=4.20<5.4.46
Linux kernel>=5.5<5.6.18
Linux kernel>=5.7<5.7.2
Debian=9.0
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

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Remedy

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2020-13974?

    CVE-2020-13974 has a high severity rating due to its potential to crash the system or escalate user privileges.

  • How do I fix CVE-2020-13974?

    To fix CVE-2020-13974, upgrade to the latest version of the Linux kernel or the specific patched versions provided by your distribution.

  • Which systems are affected by CVE-2020-13974?

    CVE-2020-13974 affects various versions of the Linux kernel, including those from Red Hat, Debian, and Ubuntu.

  • Who can exploit CVE-2020-13974?

    CVE-2020-13974 can be exploited by local users who can send specific keyboard codes multiple times.

  • When was CVE-2020-13974 disclosed?

    CVE-2020-13974 was disclosed in July 2020.

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