Out-of-bounds write in Linux kernel - CVE-2020-12654

Vulnerability identifier: #VU28162

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-12654

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the "mwifiex_ret_wmm_get_status()" function in "drivers/net/wireless/marvell/mwifiex/wmm.c" file. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Linux kernel
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Power, little endian
CentOS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
MRG Realtime
Oracle VM Server for x86
kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Data Computing Appliance (DCA)

Install updates from vendor's website.

Linux kernel - update to 5.5.4
kernel (Red Hat package) - addressed in versions 3.10.0-327.90.2.el7, 3.10.0-514.78.1.el7, 3.10.0-693.72.1.el7, 3.10.0-957.58.2.el7, 3.10.0-1062.31.2.el7, 3.10.0-1127.18.2.el7, 4.18.0-80.27.1.el8_0, 4.18.0-147.24.2.el8_1, 4.18.0-193.13.2.el8_2
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.72.1.rt56.672.el6rt, 3.10.0-1127.18.2.rt56.1116.el7, 4.18.0-193.13.2.rt13.65.el8_2
Data Computing Appliance (DCA) - update to 4.2.0.0

• http://www.openwall.com/lists/oss-security/2020/05/08/2
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3a9b153c5591548612c3955c9600a98150c81875
• https://github.com/torvalds/linux/commit/3a9b153c5591548612c3955c9600a98150c81875

• Multiple vulnerabilities in Linux kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel
• CentOS 7 update for kernel
• Red Hat Enterprise MRG 2 update for kernel-rt
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions update for kernel
• Red Hat Enterprise Linux 8.1 Extended Update Support update for kernel
• Red Hat Enterprise Linux 7 update for kernel
• Multiple vulnerabilities in Oracle VM Server for x86