Buffer overflow in Linux kernel - CVE-2019-3846

Vulnerability identifier: #VU28399

CSH Severity: High

CVSS v4: 8.7 [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]

CVE-ID: CVE-2019-3846

CWE-ID: CWE-119

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

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.

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

Install update from vendor's website.

Linux kernel - addressed in versions 4.4.186, 4.9.186, 4.14.134, 4.19.59, 5.1.18, 5.2
kpatch-patch-3_10_0-1062_1_2 (Red Hat package) - update to 1-3.el7
kpatch-patch-3_10_0-1062_1_1 (Red Hat package) - update to 1-4.el7
kpatch-patch-3_10_0-1062 (Red Hat package) - update to 1-5.el7
kernel (Red Hat package) - addressed in versions 3.10.0-957.54.1.el7, 3.10.0-1062.4.1.el7
kernel-rt (Red Hat package) - update to 3.10.0-1062.4.1.rt56.1027.el7
linux-4.4.186/kernel-generic - update to 4.4.186
linux-4.4.186/kernel-huge - update to 4.4.186
linux-4.4.186/kernel-modules - update to 4.4.186
linux-4.4.186/kernel-headers - update to 4.4.186_smp
kernel-alt (Red Hat package) - update to 4.14.0-115.17.1.el7a
kernel - addressed in versions 5.1.6-200.fc29, 5.1.7-300.fc30
kernel-headers - addressed in versions 5.1.6-200.fc29, 5.1.7-300.fc30
kernel-tools - update to 5.1.6-200.fc29

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.59
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.18
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.134
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.186
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.186

• Buffer overflow in Linux kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kpatch-patch
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel-alt
• Slackware Linux update for kernel
• Red Hat Enterprise Linux 7 update for kernel
• Fedora 29 update for kernel, kernel-headers, kernel-tools
• Fedora 30 update for kernel, kernel-headers