Input validation error in Linux kernel - CVE-2020-12351

 

Input validation error in Linux kernel - CVE-2020-12351

Published: October 13, 2020 / Updated: June 17, 2021


Vulnerability identifier: #VU47545
CSH Severity: Medium
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-2020-12351
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input within the BlueZ implementation in Linux kernel. A remote attacker on the local network can pass specially crafted input to the application and execute arbitrary code on the system.


Affected software

Linux kernel
Arch Linux
Debian Linux
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_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 IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service
Red Hat Enterprise Linux Server - AUS
Slackware Linux
Ubuntu
openEuler
Fedora
Isolation Segment
VMware Tanzu Application Service for VMs
Dell Hybrid Client
Data Computing Appliance (DCA)
VMware Tanzu Operations Manager
kernel (Red Hat package)
kernel-rt (Red Hat package)
linux-image-4.4.0-262-generic (Ubuntu package)
linux-image-generic-lts-xenial (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-lts-xenial (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-virtual-lts-xenial (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-4.4.0-262-lowlatency (Ubuntu package)
linux-4.4.240/kernel-generic
linux-4.4.240/kernel-huge
linux-4.4.240/kernel-modules
linux-4.4.240/kernel-headers
kernel-alt (Red Hat package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic-hwe-16.04-edge (Ubuntu package)
linux-image-virtual-hwe-16.04-edge (Ubuntu package)
linux-image-virtual-hwe-16.04 (Ubuntu package)
linux-image-lowlatency-hwe-16.04 (Ubuntu package)
linux-image-generic-lpae-hwe-16.04-edge (Ubuntu package)
linux-image-generic-lpae-hwe-16.04 (Ubuntu package)
linux-image-generic-hwe-16.04 (Ubuntu package)
linux-image-lowlatency-hwe-16.04-edge (Ubuntu package)
linux-image-oem (Ubuntu package)
linux-image-4.15.0-122-generic (Ubuntu package)
linux-image-4.15.0-122-generic-lpae (Ubuntu package)
linux-image-4.15.0-122-lowlatency (Ubuntu package)
linux-image-snapdragon (Ubuntu package)
linux-image-4.15.0-1090-snapdragon (Ubuntu package)
linux-image-4.15.0-1100-oem (Ubuntu package)
python3-perf-debuginfo
kernel-tools-devel
bpftool-debuginfo
python3-perf
kernel-devel
kernel-tools-debuginfo
python2-perf-debuginfo
python2-perf
kernel-source
perf
kernel
bpftool
kernel-debugsource
kernel-tools
kernel-debuginfo
perf-debuginfo
linux (Debian package)
linux-image-oem-osp1 (Ubuntu package)
linux-image-5.0.0-1070-oem-osp1 (Ubuntu package)
linux-image-raspi2-hwe-18.04 (Ubuntu package)
linux-image-5.3.0-1036-raspi2 (Ubuntu package)
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-lowlatency-hwe-18.04-edge (Ubuntu package)
linux-image-lowlatency-hwe-18.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-18.04-edge (Ubuntu package)
linux-image-generic-hwe-18.04-edge (Ubuntu package)
linux-image-generic-hwe-18.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-virtual-hwe-18.04 (Ubuntu package)
linux-image-virtual-hwe-18.04-edge (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-18.04 (Ubuntu package)
linux-image-5.4.0-52-lowlatency (Ubuntu package)
linux-image-5.4.0-52-generic-lpae (Ubuntu package)
linux-image-5.4.0-52-generic (Ubuntu package)
linux-image-snapdragon-hwe-18.04 (Ubuntu package)
linux-image-5.4.0-1022-raspi (Ubuntu package)
linux-image-raspi-hwe-18.04 (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-hwe-18.04-edge (Ubuntu package)
linux-image-raspi2 (Ubuntu package)
linux-image-raspi2-hwe-18.04-edge (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-128-lowlatency (Ubuntu package)
linux-image-5.15.0-128-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-5.15.0-130-generic-lpae (Ubuntu package)
linux-image-5.15.0-130-generic-64k (Ubuntu package)
linux-image-5.15.0-130-generic (Ubuntu package)
linux-image-oem-20.04b (Ubuntu package)
linux-image-generic-64k-hwe-20.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-oem-20.04c (Ubuntu package)
linux-image-oem-20.04d (Ubuntu package)
linux-image-xilinx-zynqmp (Ubuntu package)
linux-image-5.15.0-1041-xilinx-zynqmp (Ubuntu package)
linux-image-gkeop (Ubuntu package)
linux-image-gkeop-5.15 (Ubuntu package)
linux-image-5.15.0-1057-gkeop (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-5.15.0-1067-ibm (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-nvidia (Ubuntu package)
linux-image-nvidia-lowlatency (Ubuntu package)
linux-image-5.15.0-1070-nvidia-lowlatency (Ubuntu package)
linux-image-5.15.0-1070-nvidia (Ubuntu package)
linux-image-5.15.0-1070-raspi (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-5.15.0-1071-kvm (Ubuntu package)
linux-image-5.15.0-1071-intel-iotg (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-5.15.0-1072-gke (Ubuntu package)
linux-image-5.15.0-1072-oracle (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-oracle-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1073-oracle (Ubuntu package)
linux-image-gcp-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1074-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-5.15.0-1075-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-aws-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1076-aws (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1078-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure (Ubuntu package)
Wyse 5470
Dell Wyse 3040
Wyse 5070
linux-image-intel-iotg (Ubuntu package)
linux-image-intel (Ubuntu package)

How to mitigate CVE-2020-12351

Install updates from vendor's website.

Linux kernel - update to 5.9.0
Isolation Segment - addressed in versions 2.7.26, 2.8.20, 2.9.14, 2.10.6
VMware Tanzu Application Service for VMs - addressed in versions 2.7.27, 2.8.21, 2.9.15, 2.10.7
VMware Tanzu Operations Manager - addressed in versions 2.7.25, 2.9.12, 2.10.3
kernel (Red Hat package) - addressed in versions 3.10.0-693.77.1.el7, 3.10.0-957.61.2.el7, 3.10.0-1062.37.1.el7, 3.10.0-1160.2.2.el7, 4.18.0-80.30.1.el8_0, 4.18.0-147.32.1.el8_1, 4.18.0-193.28.1.el8_2
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1160.2.2.rt56.1134.el7, 4.18.0-193.28.1.rt13.77.el8_2
linux-image-4.4.0-262-generic (Ubuntu package) - addressed in versions Ubuntu Pro, linux-image-4.4.0-262-lowlatency
linux-image-generic-lts-xenial (Ubuntu package) - addressed in versions linux-image-lowlatency-lts-xenial, Ubuntu Pro (Infra-only)
linux-image-lowlatency (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.122.109, 5.4.0.52.55, 5.15.0.128.116
linux-image-lowlatency-lts-xenial (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-virtual (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.122.109, 5.4.0.52.55, 5.15.0.130.128
linux-image-virtual-lts-xenial (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-generic (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.122.109, 5.4.0.52.55, 5.15.0.130.128
linux-image-4.4.0-262-lowlatency (Ubuntu package) - update to Ubuntu Pro
Wyse 5470 - update to 2.2 MR4
Dell Wyse 3040 - update to 2.2 MR4
Wyse 5070 - update to 2.2 MR4
Data Computing Appliance (DCA) - update to 4.3.0.0
linux-4.4.240/kernel-generic - update to 4.4.240
linux-4.4.240/kernel-huge - update to 4.4.240
linux-4.4.240/kernel-modules - update to 4.4.240
linux-4.4.240/kernel-headers - update to 4.4.240_smp
kernel-alt (Red Hat package) - update to 4.14.0-115.32.1.el7a
linux-image-generic-lpae (Ubuntu package) - addressed in versions 4.15.0.122.109, 5.4.0.52.55, 5.15.0.130.128
linux-image-generic-hwe-16.04-edge (Ubuntu package) - update to 4.15.0.122.122
linux-image-virtual-hwe-16.04-edge (Ubuntu package) - update to 4.15.0.122.122
linux-image-virtual-hwe-16.04 (Ubuntu package) - update to 4.15.0.122.122
linux-image-lowlatency-hwe-16.04 (Ubuntu package) - update to 4.15.0.122.122
linux-image-generic-lpae-hwe-16.04-edge (Ubuntu package) - update to 4.15.0.122.122
linux-image-generic-lpae-hwe-16.04 (Ubuntu package) - update to 4.15.0.122.122
linux-image-generic-hwe-16.04 (Ubuntu package) - update to 4.15.0.122.122
linux-image-lowlatency-hwe-16.04-edge (Ubuntu package) - update to 4.15.0.122.122
linux-image-oem (Ubuntu package) - addressed in versions 4.15.0.122.122, 4.15.0.1100.104, 5.4.0.52.55
linux-image-4.15.0-122-generic (Ubuntu package) - addressed in versions 4.15.0-122.124, 4.15.0-122.124~16.04.1
linux-image-4.15.0-122-generic-lpae (Ubuntu package) - addressed in versions 4.15.0-122.124, 4.15.0-122.124~16.04.1
linux-image-4.15.0-122-lowlatency (Ubuntu package) - addressed in versions 4.15.0-122.124, 4.15.0-122.124~16.04.1
linux-image-snapdragon (Ubuntu package) - update to 4.15.0.1090.93
linux-image-4.15.0-1090-snapdragon (Ubuntu package) - update to 4.15.0-1090.99
linux-image-4.15.0-1100-oem (Ubuntu package) - update to 4.15.0-1100.110
python3-perf-debuginfo - update to 4.19.90-2011.6.0.0049
kernel-tools-devel - update to 4.19.90-2011.6.0.0049
bpftool-debuginfo - update to 4.19.90-2011.6.0.0049
python3-perf - update to 4.19.90-2011.6.0.0049
kernel-devel - update to 4.19.90-2011.6.0.0049
kernel-tools-debuginfo - update to 4.19.90-2011.6.0.0049
python2-perf-debuginfo - update to 4.19.90-2011.6.0.0049
python2-perf - update to 4.19.90-2011.6.0.0049
kernel-source - update to 4.19.90-2011.6.0.0049
perf - update to 4.19.90-2011.6.0.0049
kernel - update to 4.19.90-2011.6.0.0049
bpftool - update to 4.19.90-2011.6.0.0049
kernel-debugsource - update to 4.19.90-2011.6.0.0049
kernel-tools - update to 4.19.90-2011.6.0.0049
kernel-debuginfo - update to 4.19.90-2011.6.0.0049
perf-debuginfo - update to 4.19.90-2011.6.0.0049
linux (Debian package) - update to 4.19.152-1
linux-image-oem-osp1 (Ubuntu package) - addressed in versions 5.0.0.1070.68, 5.4.0.52.55
linux-image-5.0.0-1070-oem-osp1 (Ubuntu package) - update to 5.0.0-1070.76
linux-image-raspi2-hwe-18.04 (Ubuntu package) - addressed in versions 5.3.0.1036.25, 5.4.0.1022.57
linux-image-5.3.0-1036-raspi2 (Ubuntu package) - update to 5.3.0-1036.38
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.15.0.128.138~20.04.1
linux-image-lowlatency-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.52.55
linux-image-lowlatency-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.4.0.52.57~18.04.46
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.15.0.130.140~20.04.1
linux-image-generic-lpae-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.52.55
linux-image-generic-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.52.55
linux-image-generic-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.4.0.52.57~18.04.46
linux-image-generic-hwe-20.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.15.0.130.140~20.04.1
linux-image-virtual-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.4.0.52.57~18.04.46
linux-image-virtual-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.52.55
linux-image-virtual-hwe-20.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.15.0.130.140~20.04.1
linux-image-generic-lpae-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.52.55, 5.4.0.52.57~18.04.46
linux-image-5.4.0-52-lowlatency (Ubuntu package) - update to 5.4.0-52.57~18.04.1
linux-image-5.4.0-52-generic-lpae (Ubuntu package) - update to 5.4.0-52.57~18.04.1
linux-image-5.4.0-52-generic (Ubuntu package) - update to 5.4.0-52.57~18.04.1
linux-image-snapdragon-hwe-18.04 (Ubuntu package) - update to 5.4.0.52.57~18.04.46
linux-image-5.4.0-1022-raspi (Ubuntu package) - update to 5.4.0-1022.25~18.04.1
linux-image-raspi-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.1022.26, 5.4.0.1022.57
linux-image-raspi (Ubuntu package) - addressed in versions 5.4.0.1022.57, 5.15.0.1070.68
linux-image-raspi-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.1022.57
linux-image-raspi2 (Ubuntu package) - update to 5.4.0.1022.57
linux-image-raspi2-hwe-18.04-edge (Ubuntu package) - update to 5.4.0.1022.57
kernel - addressed in versions 5.8.15-101.fc31, 5.8.15-201.fc32, 5.8.15-301.fc33
linux-image-lowlatency-64k (Ubuntu package) - update to 5.15.0.128.116
linux-image-5.15.0-128-lowlatency (Ubuntu package) - addressed in versions 5.15.0-128.138, 5.15.0-128.138~20.04.1
linux-image-5.15.0-128-lowlatency-64k (Ubuntu package) - addressed in versions 5.15.0-128.138, 5.15.0-128.138~20.04.1
linux-image-lowlatency-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.128.138~20.04.1
linux-image-generic-64k (Ubuntu package) - update to 5.15.0.130.128
linux-image-5.15.0-130-generic-lpae (Ubuntu package) - addressed in versions 5.15.0-130.140, 5.15.0-130.140~20.04.1
linux-image-5.15.0-130-generic-64k (Ubuntu package) - addressed in versions 5.15.0-130.140, 5.15.0-130.140~20.04.1
linux-image-5.15.0-130-generic (Ubuntu package) - addressed in versions 5.15.0-130.140, 5.15.0-130.140~20.04.1
linux-image-oem-20.04b (Ubuntu package) - update to 5.15.0.130.140~20.04.1
linux-image-generic-64k-hwe-20.04 (Ubuntu package) - update to 5.15.0.130.140~20.04.1
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.130.140~20.04.1
linux-image-oem-20.04c (Ubuntu package) - update to 5.15.0.130.140~20.04.1
linux-image-oem-20.04d (Ubuntu package) - update to 5.15.0.130.140~20.04.1
linux-image-xilinx-zynqmp (Ubuntu package) - update to 5.15.0.1041.45
linux-image-5.15.0-1041-xilinx-zynqmp (Ubuntu package) - update to 5.15.0-1041.45
linux-image-gkeop (Ubuntu package) - update to 5.15.0.1057.56
linux-image-gkeop-5.15 (Ubuntu package) - update to 5.15.0.1057.56
linux-image-5.15.0-1057-gkeop (Ubuntu package) - update to 5.15.0-1057.64
linux-image-ibm (Ubuntu package) - addressed in versions 5.15.0.1067.63, 5.15.0.1067.70~20.04.1
linux-image-5.15.0-1067-ibm (Ubuntu package) - addressed in versions 5.15.0-1067.70, 5.15.0-1067.70~20.04.1
linux-image-raspi-nolpae (Ubuntu package) - update to 5.15.0.1070.68
linux-image-nvidia (Ubuntu package) - update to 5.15.0.1070.70
linux-image-nvidia-lowlatency (Ubuntu package) - update to 5.15.0.1070.70
linux-image-5.15.0-1070-nvidia-lowlatency (Ubuntu package) - update to 5.15.0-1070.71
linux-image-5.15.0-1070-nvidia (Ubuntu package) - update to 5.15.0-1070.71
linux-image-5.15.0-1070-raspi (Ubuntu package) - update to 5.15.0-1070.73
linux-image-kvm (Ubuntu package) - update to 5.15.0.1071.67
linux-image-intel-iotg (Ubuntu package) - addressed in versions 5.15.0.1071.71, 5.15.0.1071.77~20.04.1
linux-image-5.15.0-1071-kvm (Ubuntu package) - update to 5.15.0-1071.76
linux-image-5.15.0-1071-intel-iotg (Ubuntu package) - addressed in versions 5.15.0-1071.77, 5.15.0-1071.77~20.04.1
linux-image-intel (Ubuntu package) - update to 5.15.0.1071.77~20.04.1
linux-image-gke (Ubuntu package) - update to 5.15.0.1072.71
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1072.71
linux-image-5.15.0-1072-gke (Ubuntu package) - update to 5.15.0-1072.78
linux-image-5.15.0-1072-oracle (Ubuntu package) - update to 5.15.0-1072.78~20.04.1
linux-image-oracle (Ubuntu package) - update to 5.15.0.1072.78~20.04.1
linux-image-oracle-lts-22.04 (Ubuntu package) - update to 5.15.0.1073.69
linux-image-5.15.0-1073-oracle (Ubuntu package) - update to 5.15.0-1073.79
linux-image-gcp-lts-22.04 (Ubuntu package) - update to 5.15.0.1074.70
linux-image-5.15.0-1074-gcp (Ubuntu package) - addressed in versions 5.15.0-1074.83, 5.15.0-1074.83~20.04.1
linux-image-gcp (Ubuntu package) - update to 5.15.0.1074.83~20.04.1
linux-image-5.15.0-1075-aws (Ubuntu package) - update to 5.15.0-1075.82~20.04.1
linux-image-aws (Ubuntu package) - update to 5.15.0.1075.82~20.04.1
linux-image-aws-lts-22.04 (Ubuntu package) - update to 5.15.0.1076.78
linux-image-5.15.0-1076-aws (Ubuntu package) - update to 5.15.0-1076.83
linux-image-azure-lts-22.04 (Ubuntu package) - update to 5.15.0.1078.76
linux-image-5.15.0-1078-azure (Ubuntu package) - update to 5.15.0-1078.87~20.04.1
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1078.87~20.04.1
linux-image-azure (Ubuntu package) - update to 5.15.0.1078.87~20.04.1

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins