#VU30551 Use-after-free in Linux kernel - CVE-2019-19807

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Main Vulnerability Database Vulnerabilities #VU30551

#VU30551 Use-after-free in Linux kernel - CVE-2019-19807

Published: December 16, 2019 / Updated: July 17, 2020


Vulnerability identifier: #VU30551
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-19807
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

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

Install update from vendor's website.

External links