Permissions, Privileges, and Access Controls in Linux kernel - CVE-2021-3732

Vulnerability identifier: #VU74548

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-3732

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists in the way the user mounts the TmpFS filesystem with OverlayFS. A local user can gain access to hidden files that should not be accessible.

Linux kernel
Amazon Linux AMI
SUSE CaaS Platform
SUSE MicroOS
SUSE Enterprise Storage
Anolis OS
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
HPE Helion Openstack
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
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 CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for x86_64
SUSE Linux Enterprise Server
SUSE Linux Enterprise High Availability
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise Real Time Extension
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Workstation Extension
Slackware Linux
Ubuntu
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SUSE Linux Enterprise Module for Live Patching
SUSE Linux Enterprise Module for Public Cloud
SUSE Linux Enterprise Module for Legacy Software
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Realtime
SUSE Linux Enterprise Module for Development Tools
linux-image-4.4.0-1155-aws (Ubuntu package)
linux-image-aws-hwe (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-virtual-lts-xenial (Ubuntu package)
linux-image-4.4.0-1118-kvm (Ubuntu package)
linux-image-generic-lts-xenial (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-4.4.0-239-lowlatency (Ubuntu package)
linux-image-lowlatency-lts-xenial (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-4.4.0-1117-aws (Ubuntu package)
linux-image-4.4.0-239-generic (Ubuntu package)
kernel-livepatch-4_12_14-150_78-default-debuginfo
kernel-livepatch-4_12_14-150_78-default
kernel-livepatch-4_12_14-197_102-default
kgraft-patch-4_4_180-94_150-default
kgraft-patch-4_4_180-94_150-default-debuginfo
kernel-livepatch-SLE15-SP2_Update_19-debugsource
kernel-livepatch-5_3_18-24_83-default-debuginfo
kernel-livepatch-5_3_18-24_83-default
kgraft-patch-4_12_14-95_83-default
kernel-livepatch-5_3_18-59_24-default-debuginfo
kernel-livepatch-5_3_18-59_24-default
kernel-livepatch-SLE15-SP3_Update_6-debugsource
kgraft-patch-4_12_14-122_88-default
kernel-default-debuginfo
kernel-default-base-debuginfo
kernel-default-base
kernel-default
kernel-source
kernel-macros
kernel-devel
kernel-syms
kernel-default-devel
kernel-default-debugsource
gfs2-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default-debuginfo
cluster-md-kmp-default
kernel-default-man
kernel-default-kgraft
linux-4.4.301/kernel-modules
linux-4.4.301/kernel-generic
linux-4.4.301/kernel-huge
linux-4.4.301/kernel-headers
kernel-syms-rt
kernel-devel-rt
kernel-source-rt
dlm-kmp-rt
ocfs2-kmp-rt
kernel-rt_debug-devel-debuginfo
kernel-rt_debug-devel
kernel-rt_debug-debugsource
kernel-rt_debug-debuginfo
kernel-rt_debug
cluster-md-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
gfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt
kernel-rt-base
kernel-rt-base-debuginfo
kernel-rt-debuginfo
kernel-rt-debugsource
kernel-rt-devel
kernel-syms-azure
kernel-source-azure
kernel-devel-azure
kernel-azure-debugsource
kernel-azure
kernel-azure-base
kernel-azure-base-debuginfo
kernel-azure-devel
kernel-azure-debuginfo
kernel-default-devel-debuginfo
kernel-default-kgraft-devel
kernel-default-extra
kernel-default-extra-debuginfo
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-vanilla-debugsource
kernel-vanilla-debuginfo
kernel-vanilla-base-debuginfo
kernel-vanilla-base
kernel-zfcpdump-debugsource
kernel-default-livepatch
kernel-zfcpdump-debuginfo
kernel-default-livepatch-devel
kernel
linux-image-generic-lpae (Ubuntu package)
linux-image-4.15.0-159-generic (Ubuntu package)
linux-image-4.15.0-159-generic-lpae (Ubuntu package)
linux-image-4.15.0-159-lowlatency (Ubuntu package)
linux-image-virtual-hwe-16.04 (Ubuntu package)
linux-image-lowlatency-hwe-16.04 (Ubuntu package)
linux-image-generic-hwe-16.04 (Ubuntu package)
linux-image-dell300x (Ubuntu package)
linux-image-4.15.0-1028-dell300x (Ubuntu package)
linux-image-4.15.0-1081-oracle (Ubuntu package)
linux-image-oracle-lts-18.04 (Ubuntu package)
linux-image-raspi2 (Ubuntu package)
linux-image-4.15.0-1096-raspi2 (Ubuntu package)
linux-image-4.15.0-1100-kvm (Ubuntu package)
linux-image-4.15.0-1109-gcp (Ubuntu package)
linux-image-gcp-lts-18.04 (Ubuntu package)
linux-image-aws-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1112-aws (Ubuntu package)
linux-image-snapdragon (Ubuntu package)
linux-image-4.15.0-1113-snapdragon (Ubuntu package)
linux-image-azure-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1124-azure (Ubuntu package)
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-debug-modules
perf
bpftool
python3-perf
kernel-core
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-tools
kernel-debug-modules-extra
kernel-headers
kernel-modules
kernel-modules-extra
kernel-modules-internal
kernel-tools-libs-devel
kernel-tools-libs
python-perf
kernel-azure-devel-debuginfo
kernel-preempt-debugsource
kernel-preempt-debuginfo
kernel-preempt-extra-debuginfo
kernel-preempt-extra
kernel-preempt-devel-debuginfo
kernel-preempt
kernel-preempt-devel
kernel-64kb
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-zfcpdump
linux-image-oem (Ubuntu package)
linux-image-oem-20.04c (Ubuntu package)
linux-image-5.13.0-1014-oem (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-gcp (Ubuntu package)

Install updates from vendor's website.

linux-image-4.4.0-1155-aws (Ubuntu package) - update to Ubuntu Pro
linux-image-aws-hwe (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-aws (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-lowlatency (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.159.148
linux-image-virtual-lts-xenial (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-4.4.0-1118-kvm (Ubuntu package) - update to Ubuntu Pro
linux-image-generic-lts-xenial (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-kvm (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.1100.96
linux-image-4.4.0-239-lowlatency (Ubuntu package) - update to Ubuntu Pro
linux-image-lowlatency-lts-xenial (Ubuntu package) - update to Ubuntu Pro (Infra-only)
linux-image-generic (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.159.148
linux-image-virtual (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 4.15.0.159.148
linux-image-4.4.0-1117-aws (Ubuntu package) - update to Ubuntu Pro
linux-image-4.4.0-239-generic (Ubuntu package) - update to Ubuntu Pro
kernel-livepatch-4_12_14-150_78-default-debuginfo - update to 1-1.3.1
kernel-livepatch-4_12_14-150_78-default - update to 1-1.3.1
kernel-livepatch-4_12_14-197_102-default - update to 1-3.3.1
kgraft-patch-4_4_180-94_150-default - update to 1-4.3.1
kgraft-patch-4_4_180-94_150-default-debuginfo - update to 1-4.3.1
kernel-livepatch-SLE15-SP2_Update_19-debugsource - update to 1-5.3.4
kernel-livepatch-5_3_18-24_83-default-debuginfo - update to 1-5.3.4
kernel-livepatch-5_3_18-24_83-default - update to 1-5.3.4
kgraft-patch-4_12_14-95_83-default - update to 1-6.3.1
kernel-livepatch-5_3_18-59_24-default-debuginfo - update to 1-7.5.1
kernel-livepatch-5_3_18-59_24-default - update to 1-7.5.1
kernel-livepatch-SLE15-SP3_Update_6-debugsource - update to 1-7.5.1
kgraft-patch-4_12_14-122_88-default - update to 1-8.5.1
kernel-default-debuginfo - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-default-base-debuginfo - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-197.102.2
kernel-default-base - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2.9.38.3, 5.3.18-59.24.1.18.12.1
kernel-default - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-source - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.1, 5.3.18-59.24.1
kernel-macros - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.1, 5.3.18-59.24.1
kernel-devel - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.1, 5.3.18-59.24.1
kernel-syms - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.1, 5.3.18-59.24.1
kernel-default-devel - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-default-debugsource - addressed in versions 4.4.121-92.161.1, 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
gfs2-kmp-default - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
gfs2-kmp-default-debuginfo - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
ocfs2-kmp-default - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
dlm-kmp-default-debuginfo - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
dlm-kmp-default - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
cluster-md-kmp-default - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-default-man - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2
kernel-default-kgraft - addressed in versions 4.4.180-94.150.1, 4.12.14-95.83.2, 4.12.14-122.88.1
linux-4.4.301/kernel-modules - update to 4.4.301
linux-4.4.301/kernel-generic - update to 4.4.301
linux-4.4.301/kernel-huge - update to 4.4.301
linux-4.4.301/kernel-headers - update to 4.4.301_smp
kernel-syms-rt - addressed in versions 4.12.14-10.57.1, 5.3.18-51.1, 5.3.18-57.1
kernel-devel-rt - addressed in versions 4.12.14-10.57.1, 5.3.18-51.1, 5.3.18-57.1
kernel-source-rt - addressed in versions 4.12.14-10.57.1, 5.3.18-51.1, 5.3.18-57.1
dlm-kmp-rt - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
ocfs2-kmp-rt - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt_debug-devel-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt_debug-devel - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt_debug-debugsource - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt_debug-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt_debug - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2
cluster-md-kmp-rt - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
cluster-md-kmp-rt-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt-devel-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
ocfs2-kmp-rt-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
dlm-kmp-rt-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
gfs2-kmp-rt - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
gfs2-kmp-rt-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt-base - update to 4.12.14-10.57.2
kernel-rt-base-debuginfo - update to 4.12.14-10.57.2
kernel-rt-debuginfo - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt-debugsource - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-rt-devel - addressed in versions 4.12.14-10.57.2, 5.3.18-51.2, 5.3.18-57.1
kernel-syms-azure - addressed in versions 4.12.14-16.73.1, 5.3.18-18.66.1, 5.3.18-38.22.1
kernel-source-azure - addressed in versions 4.12.14-16.73.1, 5.3.18-18.66.1, 5.3.18-38.22.1
kernel-devel-azure - addressed in versions 4.12.14-16.73.1, 5.3.18-18.66.1, 5.3.18-38.22.1
kernel-azure-debugsource - addressed in versions 4.12.14-16.73.2, 5.3.18-18.66.2, 5.3.18-38.22.2
kernel-azure - addressed in versions 4.12.14-16.73.2, 5.3.18-18.66.2, 5.3.18-38.22.2
kernel-azure-base - update to 4.12.14-16.73.2
kernel-azure-base-debuginfo - update to 4.12.14-16.73.2
kernel-azure-devel - addressed in versions 4.12.14-16.73.2, 5.3.18-18.66.2, 5.3.18-38.22.2
kernel-azure-debuginfo - addressed in versions 4.12.14-16.73.2, 5.3.18-18.66.2, 5.3.18-38.22.2
kernel-default-devel-debuginfo - addressed in versions 4.12.14-95.83.2, 4.12.14-122.88.1, 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-default-kgraft-devel - addressed in versions 4.12.14-95.83.2, 4.12.14-122.88.1
kernel-default-extra - addressed in versions 4.12.14-122.88.1, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-default-extra-debuginfo - addressed in versions 4.12.14-122.88.1, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-docs - addressed in versions 4.12.14-122.88.1, 4.12.14-150.78.2, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-obs-build - addressed in versions 4.12.14-122.88.2, 4.12.14-150.78.2, 4.12.14-197.102.1, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-obs-build-debugsource - addressed in versions 4.12.14-122.88.2, 4.12.14-150.78.2, 4.12.14-197.102.1, 5.3.18-24.83.2, 5.3.18-59.24.1
reiserfs-kmp-default-debuginfo - addressed in versions 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
reiserfs-kmp-default - addressed in versions 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-vanilla-debugsource - update to 4.12.14-150.78.1
kernel-vanilla-debuginfo - update to 4.12.14-150.78.1
kernel-vanilla-base-debuginfo - update to 4.12.14-150.78.1
kernel-vanilla-base - update to 4.12.14-150.78.1
kernel-zfcpdump-debugsource - addressed in versions 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-59.24.1
kernel-default-livepatch - addressed in versions 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-zfcpdump-debuginfo - addressed in versions 4.12.14-150.78.1, 4.12.14-197.102.2, 5.3.18-59.24.1
kernel-default-livepatch-devel - addressed in versions 4.12.14-197.102.2, 5.3.18-24.83.2, 5.3.18-59.24.1
kernel - update to 4.14.248-129.473
linux-image-generic-lpae (Ubuntu package) - update to 4.15.0.159.148
linux-image-4.15.0-159-generic (Ubuntu package) - update to 4.15.0-159.167
linux-image-4.15.0-159-generic-lpae (Ubuntu package) - update to 4.15.0-159.167
linux-image-4.15.0-159-lowlatency (Ubuntu package) - update to 4.15.0-159.167
linux-image-virtual-hwe-16.04 (Ubuntu package) - update to 4.15.0.210.193
linux-image-lowlatency-hwe-16.04 (Ubuntu package) - update to 4.15.0.210.193
linux-image-generic-hwe-16.04 (Ubuntu package) - update to 4.15.0.210.193
linux-image-dell300x (Ubuntu package) - update to 4.15.0.1028.30
linux-image-4.15.0-1028-dell300x (Ubuntu package) - update to 4.15.0-1028.33
linux-image-4.15.0-1081-oracle (Ubuntu package) - update to 4.15.0-1081.89
linux-image-oracle-lts-18.04 (Ubuntu package) - update to 4.15.0.1081.91
linux-image-raspi2 (Ubuntu package) - update to 4.15.0.1096.94
linux-image-4.15.0-1096-raspi2 (Ubuntu package) - update to 4.15.0-1096.102
linux-image-4.15.0-1100-kvm (Ubuntu package) - update to 4.15.0-1100.102
linux-image-4.15.0-1109-gcp (Ubuntu package) - update to 4.15.0-1109.123
linux-image-gcp-lts-18.04 (Ubuntu package) - update to 4.15.0.1109.128
linux-image-aws-lts-18.04 (Ubuntu package) - update to 4.15.0.1112.115
linux-image-4.15.0-1112-aws (Ubuntu package) - update to 4.15.0-1112.119
linux-image-snapdragon (Ubuntu package) - update to 4.15.0.1113.116
linux-image-4.15.0-1113-snapdragon (Ubuntu package) - update to 4.15.0-1113.122
linux-image-azure-lts-18.04 (Ubuntu package) - update to 4.15.0.1124.97
linux-image-4.15.0-1124-azure (Ubuntu package) - update to 4.15.0-1124.137
kernel (Red Hat package) - update to 4.18.0-348.el8
kernel-rt (Red Hat package) - update to 4.18.0-348.rt7.130.el8
kernel-debug-modules - update to 4.19.91-25.6
perf - addressed in versions 4.19.91-25.6, 4.19.91-26
bpftool - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel - addressed in versions 4.19.91-25.6, 4.19.91-26
python3-perf - update to 4.19.91-25.6
kernel-core - update to 4.19.91-25.6
kernel-debug - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-debug-core - update to 4.19.91-25.6
kernel-debug-devel - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-tools - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-debug-modules-extra - update to 4.19.91-25.6
kernel-devel - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-headers - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-modules - update to 4.19.91-25.6
kernel-modules-extra - update to 4.19.91-25.6
kernel-modules-internal - update to 4.19.91-25.6
kernel-tools-libs-devel - addressed in versions 4.19.91-25.6, 4.19.91-26
kernel-tools-libs - addressed in versions 4.19.91-25.6, 4.19.91-26
python-perf - update to 4.19.91-26
kernel-azure-devel-debuginfo - addressed in versions 5.3.18-18.66.2, 5.3.18-38.22.2
kernel-preempt-debugsource - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt-debuginfo - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt-extra-debuginfo - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt-extra - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt-devel-debuginfo - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-preempt-devel - addressed in versions 5.3.18-24.83.2, 5.3.18-59.24.1
kernel-64kb - update to 5.3.18-59.24.1
kernel-64kb-debuginfo - update to 5.3.18-59.24.1
kernel-64kb-debugsource - update to 5.3.18-59.24.1
kernel-64kb-devel - update to 5.3.18-59.24.1
kernel-64kb-devel-debuginfo - update to 5.3.18-59.24.1
kernel-zfcpdump - update to 5.3.18-59.24.1
linux-image-oem (Ubuntu package) - update to 5.4.0.202.198
linux-image-oem-20.04c (Ubuntu package) - update to 5.13.0.1014.18
linux-image-5.13.0-1014-oem (Ubuntu package) - update to 5.13.0-1014.18
linux-image-gke (Ubuntu package) - update to 6.8.0-1015.19
linux-image-oracle (Ubuntu package) - update to 6.8.0-1017.18~22.04.1
linux-image-azure (Ubuntu package) - update to 6.8.0-1018.21~22.04.1
linux-image-gcp (Ubuntu package) - update to 6.8.0-1019.21~22.04.1

• https://ubuntu.com/security/CVE-2021-3732
• https://bugzilla.redhat.com/show_bug.cgi?id=1995249
• https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631

• Information disclosure in Linux kernel OverlayFS
• Ubuntu update for linux-aws
• Ubuntu update for linux-aws
• Ubuntu update for linux
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Ubuntu update for linux-oem-5.13
• Ubuntu update for linux
• Ubuntu update for linux-raspi2
• Amazon Linux AMI update for kernel
• Anolis OS update for kernel(ANCK)4.19
• Slackware Linux update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Anolis OS update for kernel