CVE-2023-1838

2023-04-0500:00:00

ubuntu.com

cve-2023-1838

vhost_net_set_backend

linux kernel

virtio network

local attacker

crash

kernel information leak

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

5.1%

JSON

A use-after-free flaw was found in vhost_net_set_backend in
drivers/vhost/net.c in virtio network subcomponent in the Linux kernel due
to a double fget. This flaw could allow a local attacker to crash the
system, and could even lead to a kernel information leak problem.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-224.236UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-126.142UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-47.51UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1167.180UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1085.92UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1019.23UNKNOWN
ubuntu20.04noarchlinux-aws-5.15< 5.15.0-1019.23~20.04.1UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1085.92~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1167.180~16.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1091.96UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-224.236	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-126.142	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-47.51	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1167.180	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1085.92	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1019.23	UNKNOWN
ubuntu	20.04	noarch	linux-aws-5.15	< 5.15.0-1019.23~20.04.1	UNKNOWN
ubuntu	18.04	noarch	linux-aws-5.4	< 5.4.0-1085.92~18.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-aws-hwe	< 4.15.0-1167.180~16.04.1	UNKNOWN
ubuntu	20.04	noarch	linux-azure	< 5.4.0-1091.96	UNKNOWN