SB2019100828 - Denial of service in Linux kernel
Published: October 8, 2019 Updated: July 28, 2020
Security Bulletin ID
SB2019100828
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2019-17351)
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.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2019/10/25/9
- http://xenbits.xen.org/xsa/advisory-300.html
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3
- https://github.com/torvalds/linux/commit/6ef36ab967c71690ebe7e5ef997a8be4da3bc844
- https://security.netapp.com/advisory/ntap-20191031-0005/
- https://usn.ubuntu.com/4286-1/
- https://usn.ubuntu.com/4286-2/
- https://xenbits.xen.org/xsa/advisory-300.html