PT-2019-5889 · Linux+4 · Linux Kernel+4

Syzbot · Published 2019-11-28 · Updated 2021-05-28 · CVE-2019-19462

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 5.4.1

Description The issue is related to the relay open function in kernel/relay.c of the Linux kernel, which can cause a denial of service. This is due to a NULL pointer dereference, allowing local users to trigger a denial of service, such as relay blockage.

Recommendations For Linux kernel versions through 5.4.1, update to a version newer than 5.4.1 to resolve the issue. At the moment, there is no information about other specific mitigation measures for this issue.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2019-3293

ALT-PU-2019-3343

ALT-PU-2019-3369

ALT-PU-2020-1198

ALT-PU-2020-1421

ALT-PU-2020-1450

ALT-PU-2020-1501

ALT-PU-2020-1714

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2021-03596

CVE-2019-19462

DLA-2242-1

DSA-4698-1

DSA-4699-1

MGASA-2020-0333

OPENSUSE-SU-2020:0801-1

OPENSUSE-SU-2020:0935-1

OPENSUSE-SU-2020_0801-1

OPENSUSE-SU-2020_0935-1

OPENSUSE-SU-2021:0242-1

OPENSUSE-SU-2021_0242-1

SUSE-SU-2020:1587-1

SUSE-SU-2020:1599-1

SUSE-SU-2020:1602-1

SUSE-SU-2020:1603-1

SUSE-SU-2020:1604-1

SUSE-SU-2020:1605-1

SUSE-SU-2020:1663-1

SUSE-SU-2020:2027-1

SUSE-SU-2020:2105-1

SUSE-SU-2020:2156-1

SUSE-SU-2020:2478-1

SUSE-SU-2020:2487-1

SUSE-SU-2020_1587-1

SUSE-SU-2020_1599-1

SUSE-SU-2020_1602-1

SUSE-SU-2020_1603-1

SUSE-SU-2020_1604-1

SUSE-SU-2020_1605-1

SUSE-SU-2020_1663-1

SUSE-SU-2020_2027-1

USN-4414-1

USN-4425-1

USN-4439-1

USN-4440-1

Affected Products

Alt Linux

Linuxmint

Linux Kernel

Suse

Ubuntu

References · 1314

• https://osv.dev/vulnerability/openSUSE-SU-2021:0242-1 · Vendor Advisory
• https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8 · Patch
• https://cve.org/CVERecord?id=CVE-2019-19462 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-19462 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10768 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10732 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4698-1 · Vendor Advisory
• https://usn.ubuntu.com/4440-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:1604-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0935-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:2105-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-19462 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0333 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:1603-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10767 · Vendor Advisory