#VU19998 Infinite loop in Linux kernel - CVE-2019-3900
Published: August 8, 2019 / Updated: May 30, 2020
Vulnerability identifier: #VU19998
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-3900
CWE-ID: CWE-835
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in vhost_net kernel module when processing incoming packets in handle_rx(). A remote attacker with access to guest operating system can stall the vhost_net kernel thread and cause denial of service conditions.
Remediation
Install updates from vendor's website.
External links
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.133
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.64
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.191
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.190