Buffer overflow in Linux kernel - CVE-2019-3846

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Main Vulnerability Database Vulnerabilities #VU28399

Buffer overflow in Linux kernel - CVE-2019-3846

Published: June 3, 2019 / Updated: June 1, 2020


Vulnerability identifier: #VU28399
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-3846
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Affected software:
Linux kernel
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Slackware Linux
Fedora
Red Hat Virtualization Host
kpatch-patch-3_10_0-1062_1_2 (Red Hat package)
kpatch-patch-3_10_0-1062_1_1 (Red Hat package)
kpatch-patch-3_10_0-1062 (Red Hat package)
kernel (Red Hat package)
kernel-rt (Red Hat package)
linux-4.4.186/kernel-generic
linux-4.4.186/kernel-huge
linux-4.4.186/kernel-modules
linux-4.4.186/kernel-headers
kernel-alt (Red Hat package)
kernel
kernel-headers
kernel-tools

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.


How to mitigate CVE-2019-3846

Install update from vendor's website.

Sources