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CVE-2019-19807

7.8 · HIGH

In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5.

Published Dec 15, 2019CWE-416EPSS 0.55%

Overview

CVE-2019-19807 is a high-severity vulnerability. It was published on December 15, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring.

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

Refcdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97GitHubgithub.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97Refsecurity.netapp.com/advisory/ntap-20200103-0001/Refusn.ubuntu.com/4225-1/Refusn.ubuntu.com/4227-1/Refusn.ubuntu.com/4227-2/Refcdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97GitHubgithub.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97

How CyberStrike helps

Frequently asked questions

What is CVE-2019-19807?

CVE-2019-19807 is a high-severity vulnerability. It was published on December 15, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2019-19807?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-19807?

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-2019-19807?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-19807 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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