Resource exhaustion in Linux kernel - CVE-2019-17351

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Main Vulnerability Database Vulnerabilities #VU31982

Resource exhaustion in Linux kernel - CVE-2019-17351

Published: July 28, 2020


Vulnerability identifier: #VU31982
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17351
CWE-ID: CWE-400
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

An issue was discovered in drivers/xen/balloon.c in the Linux kernel before 5.2.3, as used in Xen through 4.12.x, allowing guest OS users to cause a denial of service because of unrestricted resource consumption during the mapping of guest memory.  A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-aws (Ubuntu package)
linux-kvm (Ubuntu package)
linux-snapdragon (Ubuntu package)

How to mitigate CVE-2019-17351

Install updates from vendor's website.

Linux kernel - update to 5.2.3
linux (Ubuntu package) - update to 4.4.0-174.204
linux-raspi2 (Ubuntu package) - update to 4.4.0-1129.138
linux-aws (Ubuntu package) - update to 4.4.0-1102.113
linux-kvm (Ubuntu package) - update to 4.4.0-1066.73
linux-snapdragon (Ubuntu package) - update to 4.4.0-1133.141

External References

Related Security Bulletins