CVE-2019-19462

MEDIUM

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.

References

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/[email protected]/

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

Details

Source: MITRE

Published: 2019-11-30

Updated: 2020-08-04

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 4.9

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

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (24 total)

ID	Name	Product	Family	Severity
140378	SUSE SLES15 Security Update : kernel (SUSE-SU-2020:2487-1)	Nessus	SuSE Local Security Checks	high
140328	EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2020-1958)	Nessus	Huawei Local Security Checks	high
139531	Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5805)	Nessus	Oracle Linux Local Security Checks	low
139308	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:2105-1)	Nessus	SuSE Local Security Checks	high
139028	Ubuntu 18.04 LTS : linux kernel vulnerabilities (USN-4440-1)	Nessus	Ubuntu Local Security Checks	high
139027	Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4439-1)	Nessus	Ubuntu Local Security Checks	high
138854	Amazon Linux 2 : kernel (ALAS-2020-1465)	Nessus	Amazon Linux Local Security Checks	high
138834	Ubuntu 18.04 LTS / 20.04 : Linux kernel vulnerabilities (USN-4425-1)	Nessus	Ubuntu Local Security Checks	high
138727	openSUSE Security Update : the Linux Kernel (openSUSE-2020-935)	Nessus	SuSE Local Security Checks	high
138679	openSUSE Security Update : the Linux Kernel (openSUSE-2020-801)	Nessus	SuSE Local Security Checks	high
138643	Amazon Linux AMI : kernel (ALAS-2020-1401)	Nessus	Amazon Linux Local Security Checks	high
138272	SUSE SLES15 Security Update : kernel (SUSE-SU-2020:1663-1)	Nessus	SuSE Local Security Checks	critical
138139	Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4414-1)	Nessus	Ubuntu Local Security Checks	high
137805	EulerOS Virtualization for ARM 64 3.0.6.0 : kernel (EulerOS-SA-2020-1698)	Nessus	Huawei Local Security Checks	high
137617	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1605-1)	Nessus	SuSE Local Security Checks	high
137616	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1603-1)	Nessus	SuSE Local Security Checks	high
137615	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1602-1)	Nessus	SuSE Local Security Checks	high
137613	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:1599-1)	Nessus	SuSE Local Security Checks	high
137608	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1587-1)	Nessus	SuSE Local Security Checks	high
137341	Debian DSA-4699-1 : linux - security update	Nessus	Debian Local Security Checks	high
137340	Debian DSA-4698-1 : linux - security update	Nessus	Debian Local Security Checks	high
137339	Debian DLA-2242-1 : linux-4.9 security update	Nessus	Debian Local Security Checks	high
136870	EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1592)	Nessus	Huawei Local Security Checks	high
136485	Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5676)	Nessus	Oracle Linux Local Security Checks	high