CVE-2019-20934 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.3