CVE-2019-19462 Information

Description

relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html https://lore.kernel.org/lkml/20191129013745.7168-1-dja@axtens.net/ https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046 https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531 https://usn.ubuntu.com/4414-1/ https://usn.ubuntu.com/4425-1/ https://usn.ubuntu.com/4439-1/ https://usn.ubuntu.com/4440-1/ https://www.debian.org/security/2020/dsa-4698 https://www.debian.org/security/2020/dsa-4699

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5