Vulnerability identifier: #VU55260

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2019-20934

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor:

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://bugs.chromium.org/p/project-zero/issues/detail?id=1913
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?