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CVE-2019-12455

5.5 · MEDIUM

An issue was discovered in sunxi_divs_clk_setup in drivers/clk/sunxi/clk-sunxi.c in the Linux kernel through 5.1.5.

Published May 30, 2019CWE-476EPSS 0.44%

Overview

CVE-2019-12455 is a medium-severity vulnerability. It was published on May 30, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

An issue was discovered in sunxi_divs_clk_setup in drivers/clk/sunxi/clk-sunxi.c in the Linux kernel through 5.1.5. There is an unchecked kstrndup of derived_name, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: This id is disputed as not being an issue because “The memory allocation that was not checked is part of a code that only runs at boot time, before user processes are started. Therefore, there is no possibility for an unprivileged user to control it, and no denial of service.”

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=sunxi/clk-for-5.3&id=fcdf445ff42f036d22178b49cf64e92d527c1330Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J36BIJTKEPUOZKJNHQBUZA47RQONUKOI/Refsecurity.netapp.com/advisory/ntap-20190710-0002/Refwww.mail-archive.com/linux-kernel%40vger.kernel.org/msg2010240.htmlRefgit.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=sunxi/clk-for-5.3&id=fcdf445ff42f036d22178b49cf64e92d527c1330Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J36BIJTKEPUOZKJNHQBUZA47RQONUKOI/Refsecurity.netapp.com/advisory/ntap-20190710-0002/Refwww.mail-archive.com/linux-kernel%40vger.kernel.org/msg2010240.html

How CyberStrike helps

Frequently asked questions

What is CVE-2019-12455?

CVE-2019-12455 is a medium-severity vulnerability. It was published on May 30, 2019 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2019-12455?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-12455?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-12455?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-12455 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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