Improper locking in Linux kernel - CVE-2021-47354

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Main Vulnerability Database Vulnerabilities #VU93454

Improper locking in Linux kernel - CVE-2021-47354

Published: June 27, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU93454
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-47354
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the drm_sched_entity_kill_jobs_cb() function in drivers/gpu/drm/scheduler/sched_entity.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Enterprise Storage
SUSE Linux Enterprise Workstation Extension 12
SUSE Linux Enterprise Live Patching
Ubuntu
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 Business Critical Linux
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 Business Critical Linux
SUSE Linux Enterprise Server 15 SP3 LTSS
openSUSE Leap
openEuler
kgraft-patch-4_12_14-122_222-default
kernel-livepatch-SLE15-SP2_Update_49-debugsource
kernel-livepatch-5_3_18-150200_24_194-default
kernel-livepatch-5_3_18-150200_24_194-default-debuginfo
kernel-livepatch-SLE15-SP3_Update_45-debugsource
kernel-livepatch-5_3_18-150300_59_164-preempt-debuginfo
kernel-livepatch-5_3_18-150300_59_164-default
kernel-livepatch-5_3_18-150300_59_164-default-debuginfo
kernel-livepatch-5_3_18-150300_59_164-preempt
kernel-rt_debug
kernel-devel-rt
kernel-source-rt
kernel-rt
cluster-md-kmp-rt
kernel-rt_debug-devel
kernel-rt-base-debuginfo
kernel-rt-devel-debuginfo
kernel-rt_debug-debugsource
dlm-kmp-rt-debuginfo
gfs2-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt-base
gfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-syms-rt
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-devel-debuginfo
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-devel
dlm-kmp-rt
kernel-rt-debugsource
kernel-devel-azure
kernel-azure-base
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure
kernel-azure-base-debuginfo
kernel-syms-azure
kernel-source-azure
kernel-azure-debugsource
dlm-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-devel
kernel-syms
ocfs2-kmp-default-debuginfo
kernel-default-debuginfo
cluster-md-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default-debuginfo
dlm-kmp-default
kernel-default-debugsource
gfs2-kmp-default-debuginfo
kernel-default-kgraft-devel
kernel-default-base
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-man
kernel-obs-build
kernel-obs-build-debugsource
kernel-docs
kernel-default-kgraft
ocfs2-kmp-default
kernel-default-devel-debuginfo
kernel-macros
kernel-source
kernel-devel
kernel-default
linux (Ubuntu package)
linux-aws-hwe (Ubuntu package)
linux-oracle (Ubuntu package)
linux-azure (Ubuntu package)
python3-perf
kernel
bpftool-debuginfo
kernel-debuginfo
python2-perf
kernel-debugsource
kernel-tools-debuginfo
python3-perf-debuginfo
kernel-tools-devel
perf
kernel-tools
python2-perf-debuginfo
bpftool
perf-debuginfo
kernel-preempt-debuginfo
kernel-preempt-devel
kernel-preempt-devel-debuginfo
kernel-preempt-debugsource
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-preempt
kernel-default-livepatch
kernel-default-livepatch-devel
cluster-md-kmp-64kb-debuginfo
kernel-64kb
dtb-allwinner
dtb-lg
dtb-al
kernel-64kb-extra-debuginfo
dtb-nvidia
kernel-kvmsmall-devel
dtb-amlogic
kernel-source-vanilla
kernel-docs-html
kernel-kvmsmall
kernel-debug
kernel-kvmsmall-debuginfo
kernel-debug-devel
kernel-debug-livepatch-devel
kernel-kvmsmall-debugsource
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-livepatch-devel
gfs2-kmp-preempt
kselftests-kmp-preempt
cluster-md-kmp-preempt-debuginfo
reiserfs-kmp-preempt-debuginfo
kernel-preempt-optional
kernel-preempt-extra
dlm-kmp-preempt
kselftests-kmp-preempt-debuginfo
kernel-preempt-optional-debuginfo
kernel-preempt-livepatch-devel
reiserfs-kmp-preempt
ocfs2-kmp-preempt-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-preempt-extra-debuginfo
kernel-zfcpdump
kernel-default-optional
kselftests-kmp-default
kernel-default-optional-debuginfo
kselftests-kmp-default-debuginfo
dlm-kmp-preempt-debuginfo
kernel-obs-qa
cluster-md-kmp-preempt
gfs2-kmp-preempt-debuginfo
ocfs2-kmp-preempt
dlm-kmp-64kb
dtb-qcom
dtb-marvell
kernel-zfcpdump-debugsource
dtb-altera
dtb-broadcom
dtb-zte
kernel-64kb-debuginfo
ocfs2-kmp-64kb
kselftests-kmp-64kb
dtb-mediatek
gfs2-kmp-64kb
kernel-64kb-devel
dtb-cavium
kselftests-kmp-64kb-debuginfo
dtb-renesas
dtb-xilinx
reiserfs-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kernel-64kb-extra
ocfs2-kmp-64kb-debuginfo
kernel-zfcpdump-debuginfo
dtb-aarch64
dtb-rockchip
dtb-sprd
dtb-hisilicon
dtb-arm
kernel-64kb-debugsource
kernel-64kb-livepatch-devel
reiserfs-kmp-64kb
dtb-freescale
kernel-64kb-optional
dlm-kmp-64kb-debuginfo
dtb-apm
dtb-exynos
dtb-socionext
kernel-64kb-optional-debuginfo
kernel-64kb-devel-debuginfo
dtb-amd
kernel-default-base-rebuild
EMC Cloud Tiering Appliance

How to mitigate CVE-2021-47354

Install update from vendor's website.

Linux kernel - addressed in versions 5.4.133, 5.10.51, 5.12.18, 5.13.3, 5.14
kgraft-patch-4_12_14-122_222-default - update to 1-8.3.1
kernel-livepatch-SLE15-SP2_Update_49-debugsource - update to 1-150200.5.3.1
kernel-livepatch-5_3_18-150200_24_194-default - update to 1-150200.5.3.1
kernel-livepatch-5_3_18-150200_24_194-default-debuginfo - update to 1-150200.5.3.1
kernel-livepatch-SLE15-SP3_Update_45-debugsource - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_164-preempt-debuginfo - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_164-default - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_164-default-debuginfo - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_164-preempt - update to 1-150300.7.3.1
kernel-rt_debug - update to 4.12.14-10.191.1
kernel-devel-rt - update to 4.12.14-10.191.1
kernel-source-rt - addressed in versions 4.12.14-10.191.1, 5.3.18-150300.172.1
kernel-rt - addressed in versions 4.12.14-10.191.1, 5.3.18-150300.172.1
cluster-md-kmp-rt - update to 4.12.14-10.191.1
kernel-rt_debug-devel - update to 4.12.14-10.191.1
kernel-rt-base-debuginfo - update to 4.12.14-10.191.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.191.1
kernel-rt_debug-debugsource - update to 4.12.14-10.191.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.191.1
gfs2-kmp-rt - update to 4.12.14-10.191.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.191.1
kernel-rt-base - update to 4.12.14-10.191.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-rt-debuginfo - addressed in versions 4.12.14-10.191.1, 5.3.18-150300.172.1
kernel-syms-rt - update to 4.12.14-10.191.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.191.1
ocfs2-kmp-rt - update to 4.12.14-10.191.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.191.1
kernel-rt-devel - update to 4.12.14-10.191.1
dlm-kmp-rt - update to 4.12.14-10.191.1
kernel-rt-debugsource - addressed in versions 4.12.14-10.191.1, 5.3.18-150300.172.1
kernel-devel-azure - update to 4.12.14-16.191.1
kernel-azure-base - update to 4.12.14-16.191.1
kernel-azure-debuginfo - update to 4.12.14-16.191.1
kernel-azure-devel - update to 4.12.14-16.191.1
kernel-azure - update to 4.12.14-16.191.1
kernel-azure-base-debuginfo - update to 4.12.14-16.191.1
kernel-syms-azure - update to 4.12.14-16.191.1
kernel-source-azure - update to 4.12.14-16.191.1
kernel-azure-debugsource - update to 4.12.14-16.191.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
gfs2-kmp-default - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-devel - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-syms - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-base-debuginfo - update to 4.12.14-122.222.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
dlm-kmp-default - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-debugsource - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-kgraft-devel - update to 4.12.14-122.222.1
kernel-default-base - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1.150200.9.99.1, 5.3.18-150300.59.164.1.150300.18.96.1
kernel-default-extra-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150300.59.164.1
kernel-default-extra - addressed in versions 4.12.14-122.222.1, 5.3.18-150300.59.164.1
kernel-default-man - update to 4.12.14-122.222.1
kernel-obs-build - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-obs-build-debugsource - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-docs - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-kgraft - update to 4.12.14-122.222.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-macros - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-source - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-devel - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default - addressed in versions 4.12.14-122.222.1, 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
linux (Ubuntu package) - addressed in versions 4.15.0.254.238, 4.15.0-254.266, 4.15.0.1150.147, 4.15.0-1150.162, 4.15.0.1177.168, 4.15.0-1177.182, 4.15.0.1188.201~16.04.1, 4.15.0-1188.205, 4.15.0.1195.193, 4.15.0-1195.208, 4.15.0.1205.173, 4.15.0-1205.220, 4.15.0.2096.94, 4.15.0-2096.102, 4.15.0.2113.109, 4.15.0-2113.119, 4.15.0.2133.127, 4.15.0-2133.139
linux-aws-hwe (Ubuntu package) - addressed in versions 4.15.0-254.266~16.04.1, 4.15.0-1188.205~16.04.1, 4.15.0-1195.208~16.04.1, 4.15.0-1205.220~16.04.1
linux-oracle (Ubuntu package) - addressed in versions 4.15.0.1158.163, 4.15.0-1158.169, 4.15.0-1158.169~16.04.1
linux-azure (Ubuntu package) - update to 4.15.0-1205.220~14.04.1
python3-perf - update to 4.19.90-2406.3.0.0282
kernel - update to 4.19.90-2406.3.0.0282
bpftool-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-source - update to 4.19.90-2406.3.0.0282
python2-perf - update to 4.19.90-2406.3.0.0282
kernel-debugsource - update to 4.19.90-2406.3.0.0282
kernel-tools-debuginfo - update to 4.19.90-2406.3.0.0282
python3-perf-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-tools-devel - update to 4.19.90-2406.3.0.0282
perf - update to 4.19.90-2406.3.0.0282
kernel-devel - update to 4.19.90-2406.3.0.0282
kernel-tools - update to 4.19.90-2406.3.0.0282
python2-perf-debuginfo - update to 4.19.90-2406.3.0.0282
bpftool - update to 4.19.90-2406.3.0.0282
perf-debuginfo - update to 4.19.90-2406.3.0.0282
kernel-preempt-debuginfo - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-preempt-devel - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-preempt-devel-debuginfo - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-preempt-debugsource - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
reiserfs-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
reiserfs-kmp-default - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-preempt - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-livepatch - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
kernel-default-livepatch-devel - addressed in versions 5.3.18-150200.24.194.1, 5.3.18-150300.59.164.1
cluster-md-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
kernel-64kb - update to 5.3.18-150300.59.164.1
dtb-allwinner - update to 5.3.18-150300.59.164.1
dtb-lg - update to 5.3.18-150300.59.164.1
dtb-al - update to 5.3.18-150300.59.164.1
kernel-64kb-extra-debuginfo - update to 5.3.18-150300.59.164.1
dtb-nvidia - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-devel - update to 5.3.18-150300.59.164.1
dtb-amlogic - update to 5.3.18-150300.59.164.1
kernel-source-vanilla - update to 5.3.18-150300.59.164.1
kernel-docs-html - update to 5.3.18-150300.59.164.1
kernel-kvmsmall - update to 5.3.18-150300.59.164.1
kernel-debug - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-debuginfo - update to 5.3.18-150300.59.164.1
kernel-debug-devel - update to 5.3.18-150300.59.164.1
kernel-debug-livepatch-devel - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-debugsource - update to 5.3.18-150300.59.164.1
kernel-debug-debugsource - update to 5.3.18-150300.59.164.1
kernel-debug-debuginfo - update to 5.3.18-150300.59.164.1
kernel-debug-devel-debuginfo - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-devel-debuginfo - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-livepatch-devel - update to 5.3.18-150300.59.164.1
gfs2-kmp-preempt - update to 5.3.18-150300.59.164.1
kselftests-kmp-preempt - update to 5.3.18-150300.59.164.1
cluster-md-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
reiserfs-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-optional - update to 5.3.18-150300.59.164.1
kernel-preempt-extra - update to 5.3.18-150300.59.164.1
dlm-kmp-preempt - update to 5.3.18-150300.59.164.1
kselftests-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-optional-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-livepatch-devel - update to 5.3.18-150300.59.164.1
reiserfs-kmp-preempt - update to 5.3.18-150300.59.164.1
ocfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
gfs2-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-extra-debuginfo - update to 5.3.18-150300.59.164.1
kernel-zfcpdump - update to 5.3.18-150300.59.164.1
kernel-default-optional - update to 5.3.18-150300.59.164.1
kselftests-kmp-default - update to 5.3.18-150300.59.164.1
kernel-default-optional-debuginfo - update to 5.3.18-150300.59.164.1
kselftests-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
dlm-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
kernel-obs-qa - update to 5.3.18-150300.59.164.1
cluster-md-kmp-preempt - update to 5.3.18-150300.59.164.1
gfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-preempt - update to 5.3.18-150300.59.164.1
dlm-kmp-64kb - update to 5.3.18-150300.59.164.1
dtb-qcom - update to 5.3.18-150300.59.164.1
dtb-marvell - update to 5.3.18-150300.59.164.1
kernel-zfcpdump-debugsource - update to 5.3.18-150300.59.164.1
dtb-altera - update to 5.3.18-150300.59.164.1
dtb-broadcom - update to 5.3.18-150300.59.164.1
dtb-zte - update to 5.3.18-150300.59.164.1
kernel-64kb-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-64kb - update to 5.3.18-150300.59.164.1
kselftests-kmp-64kb - update to 5.3.18-150300.59.164.1
dtb-mediatek - update to 5.3.18-150300.59.164.1
gfs2-kmp-64kb - update to 5.3.18-150300.59.164.1
kernel-64kb-devel - update to 5.3.18-150300.59.164.1
dtb-cavium - update to 5.3.18-150300.59.164.1
kselftests-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-renesas - update to 5.3.18-150300.59.164.1
dtb-xilinx - update to 5.3.18-150300.59.164.1
reiserfs-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
cluster-md-kmp-64kb - update to 5.3.18-150300.59.164.1
kernel-64kb-extra - update to 5.3.18-150300.59.164.1
ocfs2-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
kernel-zfcpdump-debuginfo - update to 5.3.18-150300.59.164.1
dtb-aarch64 - update to 5.3.18-150300.59.164.1
dtb-rockchip - update to 5.3.18-150300.59.164.1
dtb-sprd - update to 5.3.18-150300.59.164.1
dtb-hisilicon - update to 5.3.18-150300.59.164.1
dtb-arm - update to 5.3.18-150300.59.164.1
kernel-64kb-debugsource - update to 5.3.18-150300.59.164.1
kernel-64kb-livepatch-devel - update to 5.3.18-150300.59.164.1
reiserfs-kmp-64kb - update to 5.3.18-150300.59.164.1
dtb-freescale - update to 5.3.18-150300.59.164.1
kernel-64kb-optional - update to 5.3.18-150300.59.164.1
dlm-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-apm - update to 5.3.18-150300.59.164.1
dtb-exynos - update to 5.3.18-150300.59.164.1
dtb-socionext - update to 5.3.18-150300.59.164.1
kernel-64kb-optional-debuginfo - update to 5.3.18-150300.59.164.1
kernel-64kb-devel-debuginfo - update to 5.3.18-150300.59.164.1
dtb-amd - update to 5.3.18-150300.59.164.1
kernel-default-base-rebuild - update to 5.3.18-150300.59.164.1.150300.18.96.1
EMC Cloud Tiering Appliance - update to 13.2.0.2.31

External References

Related Security Bulletins