#VU55260 Use-after-free in Linux kernel - CVE-2019-20934

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Main Vulnerability Database Vulnerabilities #VU55260

#VU55260 Use-after-free in Linux kernel - CVE-2019-20934

Published: July 22, 2021


Vulnerability identifier: #VU55260
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-20934
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 user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in Linux fair scheduler within the show_numa_stats() function, caused by improperly freed NUMA fault statistics. A local user can trigger a use-after-free error and escalate privileges on the system.



Remediation

Install updates from vendor's website.

External links