Security features bypass in Pixel - CVE-2021-39713

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Main Vulnerability Database Vulnerabilities #VU63350

Security features bypass in Pixel - CVE-2021-39713

Published: May 18, 2022


Vulnerability identifier: #VU63350
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39713
CWE-ID: CWE-254
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to multiple issues in Qdisc implementation related to rcu read lock. A local application can execute arbitrary code with elevated privileges.


Affected software

Pixel
Debian Linux
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise High Availability
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Real Time Extension
SUSE Linux Enterprise Workstation Extension
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Desktop
Ubuntu
SUSE Linux Enterprise Module for Live Patching
openSUSE Leap
Dell Secure Connect Gateway
kgraft-patch-4_12_14-95_96-default
kgraft-patch-4_12_14-122_116-default
kernel-livepatch-4_12_14-150000_150_89-default
kernel-livepatch-4_12_14-150000_150_89-default-debuginfo
kernel-livepatch-4_12_14-150100_197_111-default
kgraft-patch-4_4_180-94_161-default
kgraft-patch-4_4_180-94_161-default-debuginfo
kernel-ec2
kernel-default
kernel-default-base
kernel-default-devel
kernel-xen
kernel-ec2-base
kernel-ec2-devel
kernel-source
kernel-syms
kernel-trace
kernel-trace-base
kernel-trace-devel
kernel-xen-devel
kernel-xen-base
kgraft-patch-4_4_180-94_156-default
kgraft-patch-4_4_180-94_156-default-debuginfo
kgraft-patch-4_12_14-95_93-default
linux-image-3.13.0-190-generic (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-server (Ubuntu package)
linux-image-3.13.0-190-lowlatency (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
kernel-livepatch-4_12_14-150_86-default
kernel-livepatch-4_12_14-150_86-default-debuginfo
kgraft-patch-4_4_180-94_153-default-debuginfo
kgraft-patch-4_4_180-94_153-default
kgraft-patch-4_12_14-95_88-default
linux-image-generic-lts-xenial (Ubuntu package)
linux-image-4.4.0-1140-aws (Ubuntu package)
linux-image-4.4.0-1105-kvm (Ubuntu package)
linux-image-4.4.0-224-lowlatency (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-4.4.0-224-generic (Ubuntu package)
linux-image-lowlatency-lts-xenial (Ubuntu package)
linux-image-virtual-lts-xenial (Ubuntu package)
kernel-macros
kernel-default-base-debuginfo
kernel-default-debuginfo
kernel-default-debugsource
kernel-devel
kernel-rt
gfs2-kmp-rt-debuginfo
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
dlm-kmp-rt
cluster-md-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-source-rt
kernel-devel-rt
kernel-rt-base-debuginfo
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-base
kernel-syms-rt
kernel-rt_debug-devel-debuginfo
kernel-rt_debug-devel
kernel-rt_debug-debugsource
kernel-rt_debug-debuginfo
kernel-rt_debug
kernel-rt-devel-debuginfo
kernel-rt-devel
kernel-rt-debugsource
kernel-rt-debuginfo
kernel-azure
kernel-azure-base
kernel-devel-azure
kernel-azure-base-debuginfo
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel
kernel-syms-azure
kernel-source-azure
kernel-default-devel-debuginfo
kernel-default-man
kernel-default-kgraft
kernel-default-kgraft-devel
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
dlm-kmp-default
dlm-kmp-default-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-extra
kernel-default-extra-debuginfo
kernel-obs-build
kernel-obs-build-debugsource
kernel-docs
kernel-default-livepatch
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-vanilla-debugsource
kernel-vanilla-debuginfo
kernel-vanilla-base-debuginfo
kernel-vanilla-base
kernel-default-livepatch-devel
kernel-debug-base-debuginfo
kernel-vanilla
kernel-vanilla-devel
kernel-vanilla-devel-debuginfo
kernel-vanilla-livepatch-devel
kernel-debug-base
kernel-kvmsmall-base
kernel-kvmsmall-base-debuginfo
kernel-zfcpdump-man
linux (Debian package)
kernel-livepatch-4_12_14-150_83-default
kernel-livepatch-4_12_14-150_83-default-debuginfo
kgraft-patch-4_4_180-94_150-default-debuginfo
kgraft-patch-4_4_180-94_150-default
kgraft-patch-4_12_14-95_83-default
kernel-livepatch-4_12_14-150_78-default
kernel-livepatch-4_12_14-150_78-default-debuginfo
kgraft-patch-4_4_180-94_147-default-debuginfo
kgraft-patch-4_4_180-94_147-default
kgraft-patch-4_12_14-95_80-default
kernel-livepatch-4_12_14-150_75-default-debuginfo
kernel-livepatch-4_12_14-150_75-default
kgraft-patch-4_12_14-95_77-default
kgraft-patch-4_4_180-94_144-default
kgraft-patch-4_4_180-94_144-default-debuginfo
kgraft-patch-4_12_14-95_74-default
kernel-livepatch-4_12_14-150_72-default-debuginfo
kernel-livepatch-4_12_14-150_72-default
RecoverPoint for VMs
CloudLink

How to mitigate CVE-2021-39713

Install updates from vendor's website.

Pixel - update to 2022-03-05
Dell Secure Connect Gateway - update to 5.12.00.10
kgraft-patch-4_12_14-95_96-default - addressed in versions 1-6.3.1, 2-2.1
kgraft-patch-4_12_14-122_116-default - update to 1-8.3.1
kernel-livepatch-4_12_14-150000_150_89-default - addressed in versions 1-150000.1.3.1, 2-150000.2.1
kernel-livepatch-4_12_14-150000_150_89-default-debuginfo - addressed in versions 1-150000.1.3.1, 2-150000.2.1
kernel-livepatch-4_12_14-150100_197_111-default - update to 1-150100.3.3.1
kgraft-patch-4_4_180-94_161-default - update to 2-2.1
kgraft-patch-4_4_180-94_161-default-debuginfo - update to 2-2.1
kernel-ec2 - update to 3.0.101-108.138.1
kernel-default - addressed in versions 3.0.101-108.138.1, 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-base - addressed in versions 3.0.101-108.138.1, 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-devel - addressed in versions 3.0.101-108.138.1, 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-xen - update to 3.0.101-108.138.1
kernel-ec2-base - update to 3.0.101-108.138.1
kernel-ec2-devel - update to 3.0.101-108.138.1
kernel-source - addressed in versions 3.0.101-108.138.1, 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-syms - addressed in versions 3.0.101-108.138.1, 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-trace - update to 3.0.101-108.138.1
kernel-trace-base - update to 3.0.101-108.138.1
kernel-trace-devel - update to 3.0.101-108.138.1
kernel-xen-devel - update to 3.0.101-108.138.1
kernel-xen-base - update to 3.0.101-108.138.1
kgraft-patch-4_4_180-94_156-default - update to 3-2.1
kgraft-patch-4_4_180-94_156-default-debuginfo - update to 3-2.1
kgraft-patch-4_12_14-95_93-default - update to 3-2.1
linux-image-3.13.0-190-generic (Ubuntu package) - update to 3.13.0.190.199
linux-image-virtual (Ubuntu package) - addressed in versions 3.13.0.190.199, 4.4.0.224.231
linux-image-server (Ubuntu package) - update to 3.13.0.190.199
linux-image-3.13.0-190-lowlatency (Ubuntu package) - update to 3.13.0.190.199
linux-image-generic (Ubuntu package) - addressed in versions 3.13.0.190.199, 4.4.0.224.231
linux-image-lowlatency (Ubuntu package) - addressed in versions 3.13.0.190.199, 4.4.0.224.231
kernel-livepatch-4_12_14-150_86-default - update to 3-150000.2.1
kernel-livepatch-4_12_14-150_86-default-debuginfo - update to 3-150000.2.1
kgraft-patch-4_4_180-94_153-default-debuginfo - update to 4-2.1
kgraft-patch-4_4_180-94_153-default - update to 4-2.1
kgraft-patch-4_12_14-95_88-default - update to 4-2.1
linux-image-generic-lts-xenial (Ubuntu package) - update to 4.4.0.224.231
linux-image-4.4.0-1140-aws (Ubuntu package) - update to 4.4.0.224.231
linux-image-4.4.0-1105-kvm (Ubuntu package) - update to 4.4.0.224.231
linux-image-4.4.0-224-lowlatency (Ubuntu package) - update to 4.4.0.224.231
linux-image-aws (Ubuntu package) - update to 4.4.0.224.231
linux-image-kvm (Ubuntu package) - update to 4.4.0.224.231
linux-image-4.4.0-224-generic (Ubuntu package) - update to 4.4.0.224.231
linux-image-lowlatency-lts-xenial (Ubuntu package) - update to 4.4.0.224.231
linux-image-virtual-lts-xenial (Ubuntu package) - update to 4.4.0.224.231
kernel-macros - addressed in versions 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-base-debuginfo - addressed in versions 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150100.197.111.1
kernel-default-debuginfo - addressed in versions 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-debugsource - addressed in versions 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-devel - addressed in versions 4.4.121-92.181.1, 4.4.180-94.171.1, 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-rt - update to 4.12.14-10.84.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.84.1
gfs2-kmp-rt - update to 4.12.14-10.84.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.84.1
dlm-kmp-rt - update to 4.12.14-10.84.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.84.1
cluster-md-kmp-rt - update to 4.12.14-10.84.1
kernel-source-rt - update to 4.12.14-10.84.1
kernel-devel-rt - update to 4.12.14-10.84.1
kernel-rt-base-debuginfo - update to 4.12.14-10.84.1
ocfs2-kmp-rt - update to 4.12.14-10.84.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.84.1
kernel-rt-base - update to 4.12.14-10.84.1
kernel-syms-rt - update to 4.12.14-10.84.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.84.1
kernel-rt_debug-devel - update to 4.12.14-10.84.1
kernel-rt_debug-debugsource - update to 4.12.14-10.84.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.84.1
kernel-rt_debug - update to 4.12.14-10.84.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.84.1
kernel-rt-devel - update to 4.12.14-10.84.1
kernel-rt-debugsource - update to 4.12.14-10.84.1
kernel-rt-debuginfo - update to 4.12.14-10.84.1
kernel-azure - update to 4.12.14-16.94.1
kernel-azure-base - update to 4.12.14-16.94.1
kernel-devel-azure - update to 4.12.14-16.94.1
kernel-azure-base-debuginfo - update to 4.12.14-16.94.1
kernel-azure-debuginfo - update to 4.12.14-16.94.1
kernel-azure-debugsource - update to 4.12.14-16.94.1
kernel-azure-devel - update to 4.12.14-16.94.1
kernel-syms-azure - update to 4.12.14-16.94.1
kernel-source-azure - update to 4.12.14-16.94.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-man - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-kgraft - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1
kernel-default-kgraft-devel - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1
cluster-md-kmp-default - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
dlm-kmp-default - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
gfs2-kmp-default - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
ocfs2-kmp-default - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-95.96.1, 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-extra - update to 4.12.14-122.116.1
kernel-default-extra-debuginfo - update to 4.12.14-122.116.1
kernel-obs-build - addressed in versions 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-obs-build-debugsource - addressed in versions 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-docs - addressed in versions 4.12.14-122.116.1, 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-livepatch - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-zfcpdump-debugsource - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-zfcpdump-debuginfo - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
reiserfs-kmp-default-debuginfo - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
reiserfs-kmp-default - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-vanilla-debugsource - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-vanilla-debuginfo - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-vanilla-base-debuginfo - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-vanilla-base - addressed in versions 4.12.14-150000.150.89.1, 4.12.14-150100.197.111.1
kernel-default-livepatch-devel - update to 4.12.14-150100.197.111.1
kernel-debug-base-debuginfo - update to 4.12.14-150100.197.111.1
kernel-vanilla - update to 4.12.14-150100.197.111.1
kernel-vanilla-devel - update to 4.12.14-150100.197.111.1
kernel-vanilla-devel-debuginfo - update to 4.12.14-150100.197.111.1
kernel-vanilla-livepatch-devel - update to 4.12.14-150100.197.111.1
kernel-debug-base - update to 4.12.14-150100.197.111.1
kernel-kvmsmall-base - update to 4.12.14-150100.197.111.1
kernel-kvmsmall-base-debuginfo - update to 4.12.14-150100.197.111.1
kernel-zfcpdump-man - update to 4.12.14-150100.197.111.1
linux (Debian package) - update to 4.19.232-1
kernel-livepatch-4_12_14-150_83-default - update to 4-150000.2.1
kernel-livepatch-4_12_14-150_83-default-debuginfo - update to 4-150000.2.1
RecoverPoint for VMs - update to 6.0.SP1.P1
CloudLink - update to 7.1.4
kgraft-patch-4_4_180-94_150-default-debuginfo - update to 7-2.1
kgraft-patch-4_4_180-94_150-default - update to 7-2.1
kgraft-patch-4_12_14-95_83-default - update to 7-2.1
kernel-livepatch-4_12_14-150_78-default - update to 7-150000.2.1
kernel-livepatch-4_12_14-150_78-default-debuginfo - update to 7-150000.2.1
kgraft-patch-4_4_180-94_147-default-debuginfo - update to 11-2.1
kgraft-patch-4_4_180-94_147-default - update to 11-2.1
kgraft-patch-4_12_14-95_80-default - update to 12-2.1
kernel-livepatch-4_12_14-150_75-default-debuginfo - update to 12-150000.2.1
kernel-livepatch-4_12_14-150_75-default - update to 12-150000.2.1
kgraft-patch-4_12_14-95_77-default - update to 14-2.1
kgraft-patch-4_4_180-94_144-default - update to 14-2.1
kgraft-patch-4_4_180-94_144-default-debuginfo - update to 14-2.1
kgraft-patch-4_12_14-95_74-default - update to 15-2.1
kernel-livepatch-4_12_14-150_72-default-debuginfo - update to 15-150000.2.1
kernel-livepatch-4_12_14-150_72-default - update to 15-150000.2.1

External References

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