CVE-2019-20934

medium

Description

An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=1913

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33

Details

Source: MITRE

Published: 2020-11-28

Updated: 2021-01-12

Type: CWE-416

Risk Information

CVSS v2

Base Score: 5.4

Vector: AV:L/AC:M/Au:N/C:P/I:N/A:C

Impact Score: 7.8

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H

Impact Score: 4.2

Exploitability Score: 1

Severity: MEDIUM