Information disclosure in Linux kernel - CVE-2021-47329

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU91337

Information disclosure in Linux kernel - CVE-2021-47329

Published: June 8, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU91337
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-2021-47329
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to information disclosure within the megasas_alloc_fusion_context() function in drivers/scsi/megaraid/megaraid_sas_fusion.c, within the megasas_probe_one() and megasas_release_fusion() functions in drivers/scsi/megaraid/megaraid_sas_base.c. A local user can gain access to sensitive information.


Affected software

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Enterprise Storage
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise Server 15 SP3 Business Critical Linux
SUSE Linux Enterprise Server 15 SP3 LTSS
openSUSE Leap
openEuler
kernel-livepatch-5_3_18-150300_59_164-preempt
kernel-livepatch-5_3_18-150300_59_164-preempt-debuginfo
kernel-livepatch-5_3_18-150300_59_164-default-debuginfo
kernel-livepatch-5_3_18-150300_59_164-default
kernel-livepatch-SLE15-SP3_Update_45-debugsource
python2-perf
perf-debuginfo
python2-perf-debuginfo
python3-perf
kernel-tools-debuginfo
python3-perf-debuginfo
bpftool-debuginfo
kernel-tools-devel
kernel-devel
bpftool
kernel-tools
kernel
kernel-source
kernel-debugsource
perf
kernel-debuginfo
dtb-hisilicon
kernel-zfcpdump-debuginfo
dtb-aarch64
dtb-rockchip
dtb-sprd
kernel-preempt
dtb-arm
kernel-64kb-debugsource
kernel-64kb-livepatch-devel
reiserfs-kmp-64kb
dtb-freescale
kernel-64kb-optional
ocfs2-kmp-64kb-debuginfo
dtb-apm
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-64kb
kernel-preempt-extra-debuginfo
kernel-preempt-optional
dlm-kmp-preempt-debuginfo
ocfs2-kmp-preempt-debuginfo
reiserfs-kmp-preempt
kernel-preempt-livepatch-devel
kernel-preempt-devel
kernel-preempt-optional-debuginfo
kernel-preempt-devel-debuginfo
dlm-kmp-preempt
kernel-preempt-extra
gfs2-kmp-64kb-debuginfo
kernel-64kb-devel
dtb-cavium
kselftests-kmp-64kb-debuginfo
dtb-renesas
dtb-xilinx
reiserfs-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kernel-64kb-extra
gfs2-kmp-64kb
cluster-md-kmp-64kb-debuginfo
dtb-nvidia
dtb-amlogic
kernel-64kb-extra-debuginfo
dtb-al
dtb-lg
dtb-allwinner
dtb-exynos
dlm-kmp-64kb
kselftests-kmp-64kb
ocfs2-kmp-64kb
kernel-64kb-debuginfo
dtb-zte
dtb-broadcom
dtb-altera
dtb-mediatek
dtb-marvell
dtb-qcom
dlm-kmp-64kb-debuginfo
dtb-amd
kernel-64kb-devel-debuginfo
kernel-64kb-optional-debuginfo
dtb-socionext
kernel-debug-debuginfo
kernel-default-debuginfo
kernel-obs-build-debugsource
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default
kernel-default-debugsource
dlm-kmp-default-debuginfo
kernel-obs-build
cluster-md-kmp-default-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-livepatch-devel
kernel-kvmsmall-devel-debuginfo
kernel-debug-devel-debuginfo
kernel-preempt-debuginfo
kernel-debug-debugsource
kernel-kvmsmall-debugsource
kernel-debug-livepatch-devel
kernel-debug-devel
kernel-kvmsmall-devel
kernel-debug
kernel-kvmsmall
kernel-docs-html
kernel-source-vanilla
kernel-macros
kernel-docs
kernel-default-devel-debuginfo
reiserfs-kmp-preempt-debuginfo
cluster-md-kmp-preempt-debuginfo
kselftests-kmp-preempt
gfs2-kmp-preempt
kernel-preempt-debugsource
kselftests-kmp-preempt-debuginfo
ocfs2-kmp-preempt
gfs2-kmp-preempt-debuginfo
cluster-md-kmp-preempt
kernel-default
kernel-obs-qa
kernel-default-extra-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-devel
kernel-default-livepatch-devel
dlm-kmp-default
kernel-default-livepatch
kernel-default-extra
kernel-default-optional
kernel-syms
kselftests-kmp-default
gfs2-kmp-default
kernel-default-optional-debuginfo
kselftests-kmp-default-debuginfo
reiserfs-kmp-default
kernel-default-base
kernel-default-base-rebuild
kernel-source-rt
kernel-rt-debuginfo
kernel-rt-debugsource
kernel-rt

How to mitigate CVE-2021-47329

Install update from vendor's website.

Linux kernel - addressed in versions 5.4.134, 5.10.52, 5.12.19, 5.13.4, 5.14
kernel-livepatch-5_3_18-150300_59_164-preempt - 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-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-SLE15-SP3_Update_45-debugsource - update to 1-150300.7.3.1
python2-perf - update to 4.19.90-2406.2.0.0281
perf-debuginfo - update to 4.19.90-2406.2.0.0281
python2-perf-debuginfo - update to 4.19.90-2406.2.0.0281
python3-perf - update to 4.19.90-2406.2.0.0281
kernel-tools-debuginfo - update to 4.19.90-2406.2.0.0281
python3-perf-debuginfo - update to 4.19.90-2406.2.0.0281
bpftool-debuginfo - update to 4.19.90-2406.2.0.0281
kernel-tools-devel - update to 4.19.90-2406.2.0.0281
kernel-devel - update to 4.19.90-2406.2.0.0281
bpftool - update to 4.19.90-2406.2.0.0281
kernel-tools - update to 4.19.90-2406.2.0.0281
kernel - update to 4.19.90-2406.2.0.0281
kernel-source - update to 4.19.90-2406.2.0.0281
kernel-debugsource - update to 4.19.90-2406.2.0.0281
perf - update to 4.19.90-2406.2.0.0281
kernel-debuginfo - update to 4.19.90-2406.2.0.0281
dtb-hisilicon - 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
kernel-preempt - 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
ocfs2-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-apm - update to 5.3.18-150300.59.164.1
kernel-zfcpdump-debugsource - update to 5.3.18-150300.59.164.1
kernel-zfcpdump - update to 5.3.18-150300.59.164.1
kernel-64kb - update to 5.3.18-150300.59.164.1
kernel-preempt-extra-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-optional - update to 5.3.18-150300.59.164.1
dlm-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
reiserfs-kmp-preempt - update to 5.3.18-150300.59.164.1
kernel-preempt-livepatch-devel - update to 5.3.18-150300.59.164.1
kernel-preempt-devel - update to 5.3.18-150300.59.164.1
kernel-preempt-optional-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-devel-debuginfo - update to 5.3.18-150300.59.164.1
dlm-kmp-preempt - update to 5.3.18-150300.59.164.1
kernel-preempt-extra - update to 5.3.18-150300.59.164.1
gfs2-kmp-64kb-debuginfo - 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
gfs2-kmp-64kb - update to 5.3.18-150300.59.164.1
cluster-md-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-nvidia - update to 5.3.18-150300.59.164.1
dtb-amlogic - update to 5.3.18-150300.59.164.1
kernel-64kb-extra-debuginfo - update to 5.3.18-150300.59.164.1
dtb-al - update to 5.3.18-150300.59.164.1
dtb-lg - update to 5.3.18-150300.59.164.1
dtb-allwinner - update to 5.3.18-150300.59.164.1
dtb-exynos - update to 5.3.18-150300.59.164.1
dlm-kmp-64kb - update to 5.3.18-150300.59.164.1
kselftests-kmp-64kb - update to 5.3.18-150300.59.164.1
ocfs2-kmp-64kb - update to 5.3.18-150300.59.164.1
kernel-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-zte - update to 5.3.18-150300.59.164.1
dtb-broadcom - update to 5.3.18-150300.59.164.1
dtb-altera - update to 5.3.18-150300.59.164.1
dtb-mediatek - update to 5.3.18-150300.59.164.1
dtb-marvell - update to 5.3.18-150300.59.164.1
dtb-qcom - update to 5.3.18-150300.59.164.1
dlm-kmp-64kb-debuginfo - update to 5.3.18-150300.59.164.1
dtb-amd - update to 5.3.18-150300.59.164.1
kernel-64kb-devel-debuginfo - update to 5.3.18-150300.59.164.1
kernel-64kb-optional-debuginfo - update to 5.3.18-150300.59.164.1
dtb-socionext - update to 5.3.18-150300.59.164.1
kernel-debug-debuginfo - update to 5.3.18-150300.59.164.1
kernel-default-debuginfo - update to 5.3.18-150300.59.164.1
kernel-obs-build-debugsource - update to 5.3.18-150300.59.164.1
gfs2-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-default - update to 5.3.18-150300.59.164.1
cluster-md-kmp-default - update to 5.3.18-150300.59.164.1
kernel-default-debugsource - update to 5.3.18-150300.59.164.1
dlm-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
kernel-obs-build - update to 5.3.18-150300.59.164.1
cluster-md-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-debuginfo - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-livepatch-devel - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-devel-debuginfo - update to 5.3.18-150300.59.164.1
kernel-debug-devel-debuginfo - update to 5.3.18-150300.59.164.1
kernel-preempt-debuginfo - update to 5.3.18-150300.59.164.1
kernel-debug-debugsource - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-debugsource - update to 5.3.18-150300.59.164.1
kernel-debug-livepatch-devel - update to 5.3.18-150300.59.164.1
kernel-debug-devel - update to 5.3.18-150300.59.164.1
kernel-kvmsmall-devel - update to 5.3.18-150300.59.164.1
kernel-debug - update to 5.3.18-150300.59.164.1
kernel-kvmsmall - update to 5.3.18-150300.59.164.1
kernel-docs-html - update to 5.3.18-150300.59.164.1
kernel-devel - update to 5.3.18-150300.59.164.1
kernel-source-vanilla - update to 5.3.18-150300.59.164.1
kernel-source - update to 5.3.18-150300.59.164.1
kernel-macros - update to 5.3.18-150300.59.164.1
kernel-docs - update to 5.3.18-150300.59.164.1
kernel-default-devel-debuginfo - update to 5.3.18-150300.59.164.1
reiserfs-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
cluster-md-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
kselftests-kmp-preempt - update to 5.3.18-150300.59.164.1
gfs2-kmp-preempt - update to 5.3.18-150300.59.164.1
kernel-preempt-debugsource - update to 5.3.18-150300.59.164.1
kselftests-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
ocfs2-kmp-preempt - update to 5.3.18-150300.59.164.1
gfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.164.1
cluster-md-kmp-preempt - update to 5.3.18-150300.59.164.1
kernel-default - update to 5.3.18-150300.59.164.1
kernel-obs-qa - update to 5.3.18-150300.59.164.1
kernel-default-extra-debuginfo - update to 5.3.18-150300.59.164.1
reiserfs-kmp-default-debuginfo - update to 5.3.18-150300.59.164.1
kernel-default-devel - update to 5.3.18-150300.59.164.1
kernel-default-livepatch-devel - update to 5.3.18-150300.59.164.1
dlm-kmp-default - update to 5.3.18-150300.59.164.1
kernel-default-livepatch - update to 5.3.18-150300.59.164.1
kernel-default-extra - update to 5.3.18-150300.59.164.1
kernel-default-optional - update to 5.3.18-150300.59.164.1
kernel-syms - update to 5.3.18-150300.59.164.1
kselftests-kmp-default - update to 5.3.18-150300.59.164.1
gfs2-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
reiserfs-kmp-default - update to 5.3.18-150300.59.164.1
kernel-default-base - update to 5.3.18-150300.59.164.1.150300.18.96.1
kernel-default-base-rebuild - update to 5.3.18-150300.59.164.1.150300.18.96.1
kernel-source-rt - update to 5.3.18-150300.172.1
kernel-rt-debuginfo - update to 5.3.18-150300.172.1
kernel-rt-debugsource - update to 5.3.18-150300.172.1
kernel-rt - update to 5.3.18-150300.172.1

External References

Related Security Bulletins