CVE-2019-3900

Published: 25 April 2019

An infinite loop issue was found in the vhost_net kernel module in Linux Kernel up to and including v5.1-rc6, while handling incoming packets in handle_rx(). It could occur if one end sends packets faster than the other end can process them. A guest user, maybe remote one, could use this flaw to stall the vhost_net kernel thread, resulting in a DoS scenario.

From the Ubuntu Security Team

Jason Wang discovered that an infinite loop vulnerability existed in the virtio net driver in the Linux kernel. A local attacker in a guest VM could possibly use this to cause a denial of service in the host system.

Priority

Cvss 3 Severity Score

7.7

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-60.67)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-27.28)
	eoan	Not vulnerable (5.2.0-8.9)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.2~rc4)
	xenial	Released (4.4.0-161.189)
	Patches: Introduced by 3a4d5c94e959359ece6d6b55045c3f046677f55c Fixed by e82b9b0727ff6d665fff2d326162b460dded554d Introduced by 3a4d5c94e959359ece6d6b55045c3f046677f55c Fixed by e2412c07f8f3040593dfb88207865a3cd58680c0 Introduced by 433fc58e6bf2c8bd97e57153ed28e64fd78207b8 Fixed by e79b431fb901ba1106670bcc80b9b617b25def7d Introduced by 057cbf49a1f08297877e46c82f707b1bfea806a8 Fixed by c1ea02f15ab5efb3e93fc3144d895410bf79fcf2
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1047.49)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1014.16)
	eoan	Not vulnerable (5.3.0-1003.3)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.2~rc4)
	xenial	Released (4.4.0-1092.103)
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1021.24~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-1047.49~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1018.19~18.04.1)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1018.19)
	eoan	Not vulnerable (5.0.0-1018.19)
	trusty	Ignored (was needed ESM criteria)
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-1056.61)
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1007.8~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1018.19~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-1056.61)
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Ignored (end of life, was needs-triage)
linux-flo Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1042.45)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1015.15)
	eoan	Not vulnerable (5.0.0-1015.15)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-1041.43)
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1008.9~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1042.45)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Ignored (end of standard support)
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1041.43)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1015.15~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Ignored (end of life)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-27.28~18.04.1)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-60.67~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was pending)
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-60.67~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1043.43)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1015.16)
	eoan	Not vulnerable (5.0.0-1015.16)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.4.0-1056.63)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Ignored (end of life, was ignored)
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1056.65)
	cosmic	Ignored (end of life)
	disco	Ignored (end of life, was pending)
	eoan	Released (4.15.0-1059.68)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.4 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1020.22)
	disco	Ignored (end of life, was pending)
	eoan	Released (5.0.0-1022.24)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1022.25)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1004.8)
	eoan	Not vulnerable (5.3.0-1002.2)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.15.0-1022.25~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1007.12~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1044.47)
	cosmic	Ignored (end of life)
	disco	Released (5.0.0-1015.15)
	eoan	Not vulnerable (5.0.0-1015.15)
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.4.0-1120.129)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1017.19~18.04.1)
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1062.69)
	cosmic	Does not exist
	disco	Released (5.0.0-1019.20)
	eoan	Does not exist
	trusty	Does not exist
	upstream	Released (5.2~rc4)
	xenial	Released (4.4.0-1124.130)

Severity score breakdown

Parameter	Value
Base score	7.7
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

Bugs

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3900

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