Out-of-bounds read in Linux kernel - CVE-2020-14390

Vulnerability identifier: #VU47220

CSH Severity: Medium

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14390

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to an out-of-bounds read that occurs leading to memory corruption or a denial of service. This highest threat from this vulnerability is to system availability.

Linux kernel
Slackware Linux
Ubuntu
openEuler
Oracle VM Server for x86
linux-image-virtual-lts-xenial (Ubuntu package)
linux-image-powerpc64-smp-lts-xenial (Ubuntu package)
linux-image-powerpc64-emb-lts-xenial (Ubuntu package)
linux-image-powerpc-smp-lts-xenial (Ubuntu package)
linux-image-powerpc-e500mc-lts-xenial (Ubuntu package)
linux-image-generic-lpae-lts-xenial (Ubuntu package)
linux-image-generic-lts-xenial (Ubuntu package)
linux-image-lowlatency-lts-xenial (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-powerpc64-smp (Ubuntu package)
linux-image-powerpc64-emb (Ubuntu package)
linux-image-powerpc-smp (Ubuntu package)
linux-image-powerpc-e500mc (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-4.4.0-197-powerpc64-emb (Ubuntu package)
linux-image-4.4.0-197-powerpc64-smp (Ubuntu package)
linux-image-4.4.0-197-powerpc-smp (Ubuntu package)
linux-image-4.4.0-197-powerpc-e500mc (Ubuntu package)
linux-image-4.4.0-197-lowlatency (Ubuntu package)
linux-image-4.4.0-197-generic-lpae (Ubuntu package)
linux-image-4.4.0-197-generic (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-4.4.0-1082-aws (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-4.4.0-1084-kvm (Ubuntu package)
linux-image-4.4.0-1118-aws (Ubuntu package)
linux-image-raspi2 (Ubuntu package)
linux-image-4.4.0-1142-raspi2 (Ubuntu package)
linux-image-snapdragon (Ubuntu package)
linux-image-4.4.0-1146-snapdragon (Ubuntu package)
linux-4.4.240/kernel-generic
linux-4.4.240/kernel-modules
linux-4.4.240/kernel-huge
linux-4.4.240/kernel-headers
linux-image-oem (Ubuntu package)
linux-image-generic-hwe-16.04 (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 (Ubuntu package)
linux-image-4.15.0-126-lowlatency (Ubuntu package)
linux-image-4.15.0-126-generic (Ubuntu package)
linux-image-4.15.0-126-generic-lpae (Ubuntu package)
linux-image-4.15.0-128-lowlatency (Ubuntu package)
linux-image-4.15.0-128-generic (Ubuntu package)
linux-image-4.15.0-128-generic-lpae (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-4.15.0-1059-oracle (Ubuntu package)
linux-image-oracle-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1061-oracle (Ubuntu package)
linux-image-gke-4.15 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-4.15.0-1074-gke (Ubuntu package)
linux-image-4.15.0-1074-raspi2 (Ubuntu package)
linux-image-4.15.0-1076-gke (Ubuntu package)
linux-image-4.15.0-1079-kvm (Ubuntu package)
linux-image-4.15.0-1081-kvm (Ubuntu package)
linux-image-aws-hwe (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-aws-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1088-aws (Ubuntu package)
linux-image-4.15.0-1088-gcp (Ubuntu package)
linux-image-gcp-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1090-aws (Ubuntu package)
linux-image-4.15.0-1090-gcp (Ubuntu package)
linux-image-4.15.0-1091-snapdragon (Ubuntu package)
linux-image-4.15.0-1093-snapdragon (Ubuntu package)
linux-image-azure-lts-18.04 (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-edge (Ubuntu package)
linux-image-4.15.0-1100-azure (Ubuntu package)
linux-image-4.15.0-1102-azure (Ubuntu package)
linux-image-4.15.0-1103-oem (Ubuntu package)
bpftool-debuginfo
kernel-debuginfo
bpftool
python3-perf-debuginfo
python3-perf
python2-perf-debuginfo
python2-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-devel
kernel-debugsource
kernel
linux-image-lowlatency-hwe-20.04 (Ubuntu package)
linux-image-generic-lpae-hwe-20.04 (Ubuntu package)
linux-image-generic-hwe-20.04 (Ubuntu package)
linux-image-virtual-hwe-20.04 (Ubuntu package)
linux-image-oem-osp1 (Ubuntu package)
linux-image-5.4.0-56-lowlatency (Ubuntu package)
linux-image-5.4.0-56-generic-lpae (Ubuntu package)
linux-image-5.4.0-56-generic (Ubuntu package)
linux-image-snapdragon-hwe-18.04 (Ubuntu package)
linux-image-virtual-hwe-18.04 (Ubuntu package)
linux-image-lowlatency-hwe-18.04 (Ubuntu package)
linux-image-generic-hwe-18.04 (Ubuntu package)
linux-image-generic-lpae-hwe-18.04 (Ubuntu package)
linux-image-5.4.0-58-generic (Ubuntu package)
linux-image-5.4.0-58-generic-lpae (Ubuntu package)
linux-image-5.4.0-58-lowlatency (Ubuntu package)
linux-image-5.4.0-1023-raspi (Ubuntu package)
linux-image-raspi-hwe-18.04 (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.4.0-1025-raspi (Ubuntu package)
linux-image-5.4.0-1028-kvm (Ubuntu package)
linux-image-5.4.0-1030-kvm (Ubuntu package)
linux-image-5.4.0-1030-aws (Ubuntu package)
linux-image-5.4.0-1030-oracle (Ubuntu package)
linux-image-5.4.0-1030-gcp (Ubuntu package)
linux-image-5.4.0-1032-aws (Ubuntu package)
linux-image-5.4.0-1032-azure (Ubuntu package)
linux-image-5.4.0-1032-oracle (Ubuntu package)
linux-image-5.4.0-1032-gcp (Ubuntu package)
linux-image-5.4.0-1033-oracle (Ubuntu package)
linux-image-5.4.0-1034-azure (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-5.6.0-1053-oem (Ubuntu package)

Update to version 5.9.0.

Linux kernel - update to 5.9.0
linux-image-virtual-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-powerpc64-smp-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-powerpc64-emb-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-powerpc-smp-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-powerpc-e500mc-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-generic-lpae-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-generic-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-lowlatency-lts-xenial (Ubuntu package) - update to 4.4.0.197.172
linux-image-virtual (Ubuntu package) - addressed in versions 4.4.0.197.203, 4.15.0.126.113, 4.15.0.128.115, 5.4.0.56.59, 5.4.0.58.61
linux-image-powerpc64-smp (Ubuntu package) - update to 4.4.0.197.203
linux-image-powerpc64-emb (Ubuntu package) - update to 4.4.0.197.203
linux-image-powerpc-smp (Ubuntu package) - update to 4.4.0.197.203
linux-image-powerpc-e500mc (Ubuntu package) - update to 4.4.0.197.203
linux-image-lowlatency (Ubuntu package) - addressed in versions 4.4.0.197.203, 4.15.0.126.113, 4.15.0.128.115, 5.4.0.56.59, 5.4.0.58.61
linux-image-generic-lpae (Ubuntu package) - addressed in versions 4.4.0.197.203, 4.15.0.126.113, 4.15.0.128.115, 5.4.0.56.59, 5.4.0.58.61
linux-image-generic (Ubuntu package) - addressed in versions 4.4.0.197.203, 4.15.0.126.113, 4.15.0.128.115, 5.4.0.56.59, 5.4.0.58.61
linux-image-4.4.0-197-powerpc64-emb (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-powerpc64-smp (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-powerpc-smp (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-powerpc-e500mc (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-lowlatency (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-generic-lpae (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-4.4.0-197-generic (Ubuntu package) - addressed in versions 4.4.0-197.229, 4.4.0-197.229~14.04.1
linux-image-aws (Ubuntu package) - addressed in versions 4.4.0.1082.79, 4.4.0.1118.123, 5.4.0.1030.15, 5.4.0.1030.31, 5.4.0.1032.17, 5.4.0.1032.33
linux-image-4.4.0-1082-aws (Ubuntu package) - update to 4.4.0-1082.86
linux-image-kvm (Ubuntu package) - addressed in versions 4.4.0.1084.82, 4.15.0.1079.75, 4.15.0.1081.77, 5.4.0.1028.26, 5.4.0.1030.28
linux-image-4.4.0-1084-kvm (Ubuntu package) - update to 4.4.0-1084.93
linux-image-4.4.0-1118-aws (Ubuntu package) - update to 4.4.0-1118.132
linux-image-raspi2 (Ubuntu package) - addressed in versions 4.4.0.1142.142, 4.15.0.1074.71, 5.4.0.1023.58, 5.4.0.1025.60
linux-image-4.4.0-1142-raspi2 (Ubuntu package) - update to 4.4.0-1142.152
linux-image-snapdragon (Ubuntu package) - addressed in versions 4.4.0.1146.138, 4.15.0.1091.94, 4.15.0.1093.96
linux-image-4.4.0-1146-snapdragon (Ubuntu package) - update to 4.4.0-1146.156
linux-4.4.240/kernel-generic - update to 4.4.240
linux-4.4.240/kernel-modules - update to 4.4.240
linux-4.4.240/kernel-huge - update to 4.4.240
linux-4.4.240/kernel-headers - update to 4.4.240_smp
linux-image-oem (Ubuntu package) - addressed in versions 4.15.0.126.125, 4.15.0.128.127, 4.15.0.1103.107, 5.4.0.56.59, 5.4.0.58.61, 5.4.0.58.64~18.04.53
linux-image-generic-hwe-16.04 (Ubuntu package) - addressed in versions 4.15.0.126.125, 4.15.0.128.127
linux-image-virtual-hwe-16.04 (Ubuntu package) - addressed in versions 4.15.0.126.125, 4.15.0.128.127
linux-image-lowlatency-hwe-16.04 (Ubuntu package) - addressed in versions 4.15.0.126.125, 4.15.0.128.127
linux-image-generic-lpae-hwe-16.04 (Ubuntu package) - addressed in versions 4.15.0.126.125, 4.15.0.128.127
linux-image-4.15.0-126-lowlatency (Ubuntu package) - addressed in versions 4.15.0-126.129, 4.15.0-126.129~16.04.1
linux-image-4.15.0-126-generic (Ubuntu package) - addressed in versions 4.15.0-126.129, 4.15.0-126.129~16.04.1
linux-image-4.15.0-126-generic-lpae (Ubuntu package) - addressed in versions 4.15.0-126.129, 4.15.0-126.129~16.04.1
linux-image-4.15.0-128-lowlatency (Ubuntu package) - addressed in versions 4.15.0-128.131, 4.15.0-128.131~16.04.1
linux-image-4.15.0-128-generic (Ubuntu package) - addressed in versions 4.15.0-128.131, 4.15.0-128.131~16.04.1
linux-image-4.15.0-128-generic-lpae (Ubuntu package) - addressed in versions 4.15.0-128.131, 4.15.0-128.131~16.04.1
linux-image-oracle (Ubuntu package) - addressed in versions 4.15.0.1059.48, 4.15.0.1061.50, 5.4.0.1030.14, 5.4.0.1030.27, 5.4.0.1032.29, 5.4.0.1033.16
linux-image-4.15.0-1059-oracle (Ubuntu package) - addressed in versions 4.15.0-1059.65, 4.15.0-1059.65~16.04.1
linux-image-oracle-lts-18.04 (Ubuntu package) - addressed in versions 4.15.0.1059.69, 4.15.0.1061.71
linux-image-4.15.0-1061-oracle (Ubuntu package) - addressed in versions 4.15.0-1061.67, 4.15.0-1061.67~16.04.1
linux-image-gke-4.15 (Ubuntu package) - addressed in versions 4.15.0.1074.78, 4.15.0.1076.80
linux-image-gke (Ubuntu package) - addressed in versions 4.15.0.1074.78, 4.15.0.1076.80, 4.15.0.1088.89, 4.15.0.1090.91, 5.4.0.1030.38, 5.4.0.1032.41
linux-image-4.15.0-1074-gke (Ubuntu package) - update to 4.15.0-1074.79
linux-image-4.15.0-1074-raspi2 (Ubuntu package) - update to 4.15.0-1074.79
linux-image-4.15.0-1076-gke (Ubuntu package) - update to 4.15.0-1076.81
linux-image-4.15.0-1079-kvm (Ubuntu package) - update to 4.15.0-1079.81
linux-image-4.15.0-1081-kvm (Ubuntu package) - update to 4.15.0-1081.83
linux-image-aws-hwe (Ubuntu package) - addressed in versions 4.15.0.1088.82, 4.15.0.1090.84
linux-image-gcp (Ubuntu package) - addressed in versions 4.15.0.1088.89, 4.15.0.1090.91, 5.4.0.1030.18, 5.4.0.1030.38, 5.4.0.1032.20, 5.4.0.1032.41
linux-image-aws-lts-18.04 (Ubuntu package) - addressed in versions 4.15.0.1088.90, 4.15.0.1090.92
linux-image-4.15.0-1088-aws (Ubuntu package) - addressed in versions 4.15.0-1088.93, 4.15.0-1088.93~16.04.1
linux-image-4.15.0-1088-gcp (Ubuntu package) - addressed in versions 4.15.0-1088.101, 4.15.0-1088.101~16.04.1
linux-image-gcp-lts-18.04 (Ubuntu package) - addressed in versions 4.15.0.1088.106, 4.15.0.1090.108
linux-image-4.15.0-1090-aws (Ubuntu package) - addressed in versions 4.15.0-1090.95, 4.15.0-1090.95~16.04.1
linux-image-4.15.0-1090-gcp (Ubuntu package) - addressed in versions 4.15.0-1090.103, 4.15.0-1090.103~16.04.1
linux-image-4.15.0-1091-snapdragon (Ubuntu package) - update to 4.15.0-1091.100
linux-image-4.15.0-1093-snapdragon (Ubuntu package) - update to 4.15.0-1093.102
linux-image-azure-lts-18.04 (Ubuntu package) - addressed in versions 4.15.0.1100.73, 4.15.0.1102.75
linux-image-azure (Ubuntu package) - addressed in versions 4.15.0.1100.75, 4.15.0.1100.93, 4.15.0.1102.95, 5.4.0.1032.14, 5.4.0.1032.30, 5.4.0.1034.16, 5.4.0.1034.32
linux-image-azure-edge (Ubuntu package) - update to 4.15.0.1100.93
linux-image-4.15.0-1100-azure (Ubuntu package) - addressed in versions 4.15.0-1100.111, 4.15.0-1100.111~14.04.1, 4.15.0-1100.111~16.04.1
linux-image-4.15.0-1102-azure (Ubuntu package) - addressed in versions 4.15.0-1102.113, 4.15.0-1102.113~16.04.1
linux-image-4.15.0-1103-oem (Ubuntu package) - update to 4.15.0-1103.114
bpftool-debuginfo - update to 4.19.90-2010.2.0.0046
kernel-debuginfo - update to 4.19.90-2010.2.0.0046
bpftool - update to 4.19.90-2010.2.0.0046
python3-perf-debuginfo - update to 4.19.90-2010.2.0.0046
python3-perf - update to 4.19.90-2010.2.0.0046
python2-perf-debuginfo - update to 4.19.90-2010.2.0.0046
python2-perf - update to 4.19.90-2010.2.0.0046
perf-debuginfo - update to 4.19.90-2010.2.0.0046
perf - update to 4.19.90-2010.2.0.0046
kernel-tools-devel - update to 4.19.90-2010.2.0.0046
kernel-tools-debuginfo - update to 4.19.90-2010.2.0.0046
kernel-tools - update to 4.19.90-2010.2.0.0046
kernel-source - update to 4.19.90-2010.2.0.0046
kernel-devel - update to 4.19.90-2010.2.0.0046
kernel-debugsource - update to 4.19.90-2010.2.0.0046
kernel - update to 4.19.90-2010.2.0.0046
linux-image-lowlatency-hwe-20.04 (Ubuntu package) - update to 5.4.0.56.59
linux-image-generic-lpae-hwe-20.04 (Ubuntu package) - update to 5.4.0.56.59
linux-image-generic-hwe-20.04 (Ubuntu package) - update to 5.4.0.56.59
linux-image-virtual-hwe-20.04 (Ubuntu package) - update to 5.4.0.56.59
linux-image-oem-osp1 (Ubuntu package) - addressed in versions 5.4.0.56.59, 5.4.0.56.62~18.04.50, 5.4.0.58.61, 5.4.0.58.64~18.04.53
linux-image-5.4.0-56-lowlatency (Ubuntu package) - update to 5.4.0-56.62~18.04.1
linux-image-5.4.0-56-generic-lpae (Ubuntu package) - update to 5.4.0-56.62~18.04.1
linux-image-5.4.0-56-generic (Ubuntu package) - update to 5.4.0-56.62~18.04.1
linux-image-snapdragon-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.56.62~18.04.50, 5.4.0.58.64~18.04.53
linux-image-virtual-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.56.62~18.04.50, 5.4.0.58.64~18.04.53
linux-image-lowlatency-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.56.62~18.04.50, 5.4.0.58.64~18.04.53
linux-image-generic-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.56.62~18.04.50, 5.4.0.58.64~18.04.53
linux-image-generic-lpae-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.56.62~18.04.50, 5.4.0.58.64~18.04.53
linux-image-5.4.0-58-generic (Ubuntu package) - update to 5.4.0-58.64~18.04.1
linux-image-5.4.0-58-generic-lpae (Ubuntu package) - update to 5.4.0-58.64~18.04.1
linux-image-5.4.0-58-lowlatency (Ubuntu package) - update to 5.4.0-58.64~18.04.1
linux-image-5.4.0-1023-raspi (Ubuntu package) - update to 5.4.0-1023.26~18.04.1
linux-image-raspi-hwe-18.04 (Ubuntu package) - addressed in versions 5.4.0.1023.27, 5.4.0.1025.29
linux-image-raspi (Ubuntu package) - addressed in versions 5.4.0.1023.58, 5.4.0.1025.60
linux-image-5.4.0-1025-raspi (Ubuntu package) - update to 5.4.0-1025.28~18.04.1
linux-image-5.4.0-1028-kvm (Ubuntu package) - update to 5.4.0-1028.29
linux-image-5.4.0-1030-kvm (Ubuntu package) - update to 5.4.0-1030.31
linux-image-5.4.0-1030-aws (Ubuntu package) - update to 5.4.0-1030.31~18.04.1
linux-image-5.4.0-1030-oracle (Ubuntu package) - update to 5.4.0-1030.32~18.04.1
linux-image-5.4.0-1030-gcp (Ubuntu package) - update to 5.4.0-1030.32~18.04.1
linux-image-5.4.0-1032-aws (Ubuntu package) - update to 5.4.0-1032.33~18.04.1
linux-image-5.4.0-1032-azure (Ubuntu package) - update to 5.4.0-1032.33~18.04.1
linux-image-5.4.0-1032-oracle (Ubuntu package) - update to 5.4.0-1032.34
linux-image-5.4.0-1032-gcp (Ubuntu package) - update to 5.4.0-1032.34~18.04.1
linux-image-5.4.0-1033-oracle (Ubuntu package) - update to 5.4.0-1033.35
linux-image-5.4.0-1034-azure (Ubuntu package) - update to 5.4.0-1034.35~18.04.1
linux-image-oem-20.04 (Ubuntu package) - update to 5.6.0.1053.49
linux-image-5.6.0-1053-oem (Ubuntu package) - update to 5.6.0-1053.57

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50145474f6ef4a9c19205b173da6264a644c7489
• https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
• https://seclists.org/oss-sec/2020/q3/174
• https://www.openwall.com/lists/oss-security/2020/09/15/2

• Multiple vulnerabilities in Oracle VM Server for x86
• Ubuntu update for linux-oem-5.6
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Slackware Linux update for kernel
• openEuler 20.03 LTS update for kernel