Memory leak in Linux kernel - CVE-2020-36780

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Main Vulnerability Database Vulnerabilities #VU89266

Memory leak in Linux kernel - CVE-2020-36780

Published: May 8, 2024 / Updated: May 14, 2025


Vulnerability identifier: #VU89266
CSH Severity: Low
CVSS v4 BT: 4.3 [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/E:U/U:Clear]
CVE-ID: CVE-2020-36780
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due reference leak when pm_runtime_get_sync fails within the sprd_i2c_master_xfer() and sprd_i2c_remove() function in drivers/i2c/busses/i2c-sprd.c. A local user can perform denial of service attack.


Affected software

Linux kernel
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
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 Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 Business Critical Linux
SUSE Linux Enterprise Live Patching
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
kernel-livepatch-5_3_18-150200_24_188-default-debuginfo
kernel-livepatch-SLE15-SP2_Update_47-debugsource
kernel-livepatch-5_3_18-150200_24_188-default
kernel-livepatch-5_3_18-150300_59_158-preempt
kernel-livepatch-5_3_18-150300_59_158-preempt-debuginfo
kernel-livepatch-SLE15-SP3_Update_43-debugsource
kernel-livepatch-5_3_18-150300_59_158-default
kernel-livepatch-5_3_18-150300_59_158-default-debuginfo
kernel
kernel-devel
perf-debuginfo
perf
kernel-source
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
python2-perf-debuginfo
kernel-tools-devel
kernel-tools
kernel-tools-debuginfo
python2-perf
python3-perf-debuginfo
python3-perf
kernel-obs-build-debugsource
kernel-default
kernel-default-devel-debuginfo
kernel-obs-build
kernel-default-devel
kernel-preempt-debuginfo
kernel-macros
kernel-docs
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-syms
kernel-default-livepatch-devel
kernel-default-debuginfo
kernel-default-livepatch
kernel-default-debugsource
gfs2-kmp-default
ocfs2-kmp-default
cluster-md-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-preempt-devel
kernel-preempt-debugsource
kernel-preempt-devel-debuginfo
kernel-preempt
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
dlm-kmp-default
kernel-default-base
gfs2-kmp-preempt
kselftests-kmp-64kb
kernel-preempt-livepatch-devel
cluster-md-kmp-preempt
ocfs2-kmp-preempt-debuginfo
kselftests-kmp-preempt-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
dtb-aarch64
dtb-qcom
dtb-sprd
dtb-renesas
dtb-freescale
dtb-allwinner
reiserfs-kmp-preempt-debuginfo
kselftests-kmp-preempt
kernel-preempt-optional-debuginfo
ocfs2-kmp-preempt
kernel-preempt-extra-debuginfo
gfs2-kmp-preempt-debuginfo
kernel-preempt-extra
cluster-md-kmp-preempt-debuginfo
reiserfs-kmp-preempt
dlm-kmp-preempt
kernel-preempt-optional
dlm-kmp-preempt-debuginfo
dtb-nvidia
dtb-amlogic
ocfs2-kmp-64kb
dlm-kmp-64kb
cluster-md-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
reiserfs-kmp-64kb
dtb-rockchip
kernel-64kb-extra
dtb-arm
kernel-64kb-optional
kernel-64kb-livepatch-devel
dlm-kmp-64kb-debuginfo
dtb-zte
dtb-cavium
gfs2-kmp-64kb
dtb-marvell
kernel-64kb-extra-debuginfo
dtb-apm
dtb-mediatek
dtb-socionext
kernel-64kb-optional-debuginfo
reiserfs-kmp-64kb-debuginfo
cluster-md-kmp-64kb
dtb-broadcom
dtb-al
kselftests-kmp-64kb-debuginfo
dtb-xilinx
dtb-exynos
dtb-amd
dtb-altera
dtb-lg
gfs2-kmp-64kb-debuginfo
dtb-hisilicon
kernel-kvmsmall
kernel-source-vanilla
kernel-docs-html
kernel-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
kernel-64kb
kernel-debug-debuginfo
kernel-obs-qa
kernel-default-optional-debuginfo
kernel-default-optional
kernel-default-extra-debuginfo
kselftests-kmp-default-debuginfo
kernel-default-extra
kselftests-kmp-default
kernel-kvmsmall-devel-debuginfo
kernel-debug-debugsource
kernel-kvmsmall-debugsource
kernel-debug-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-livepatch-devel
kernel-kvmsmall-devel
kernel-debug-devel
kernel-debug-livepatch-devel
kernel-debug
kernel-default-base-rebuild
kernel-source-rt
kernel-rt-debuginfo
kernel-rt-debugsource
kernel-rt

How to mitigate CVE-2020-36780

Install updates from vendor's website.

Linux kernel - addressed in versions 5.4.119, 5.10.37, 5.11.21, 5.12.4, 5.13
kernel-livepatch-5_3_18-150200_24_188-default-debuginfo - update to 1-150200.5.3.3
kernel-livepatch-SLE15-SP2_Update_47-debugsource - update to 1-150200.5.3.3
kernel-livepatch-5_3_18-150200_24_188-default - update to 1-150200.5.3.3
kernel-livepatch-5_3_18-150300_59_158-preempt - update to 1-150300.7.3.5
kernel-livepatch-5_3_18-150300_59_158-preempt-debuginfo - update to 1-150300.7.3.5
kernel-livepatch-SLE15-SP3_Update_43-debugsource - update to 1-150300.7.3.5
kernel-livepatch-5_3_18-150300_59_158-default - update to 1-150300.7.3.5
kernel-livepatch-5_3_18-150300_59_158-default-debuginfo - update to 1-150300.7.3.5
kernel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-devel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-source - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
bpftool - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
bpftool-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-debugsource - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python2-perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools-devel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python2-perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python3-perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python3-perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-obs-build-debugsource - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-devel-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-obs-build - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-devel - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-preempt-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-macros - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-devel - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-source - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-docs - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
reiserfs-kmp-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
reiserfs-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-syms - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-livepatch-devel - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-livepatch - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-debugsource - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
gfs2-kmp-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
ocfs2-kmp-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
cluster-md-kmp-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
gfs2-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
ocfs2-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-preempt-devel - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-preempt-debugsource - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-preempt-devel-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-preempt - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
cluster-md-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
dlm-kmp-default-debuginfo - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
dlm-kmp-default - addressed in versions 5.3.18-150200.24.188.1, 5.3.18-150300.59.158.1
kernel-default-base - addressed in versions 5.3.18-150200.24.188.1.150200.9.95.3, 5.3.18-150300.59.158.1.150300.18.92.5
gfs2-kmp-preempt - update to 5.3.18-150300.59.158.1
kselftests-kmp-64kb - update to 5.3.18-150300.59.158.1
kernel-preempt-livepatch-devel - update to 5.3.18-150300.59.158.1
cluster-md-kmp-preempt - update to 5.3.18-150300.59.158.1
ocfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
kselftests-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
kernel-zfcpdump - update to 5.3.18-150300.59.158.1
kernel-zfcpdump-debuginfo - update to 5.3.18-150300.59.158.1
kernel-zfcpdump-debugsource - update to 5.3.18-150300.59.158.1
dtb-aarch64 - update to 5.3.18-150300.59.158.1
dtb-qcom - update to 5.3.18-150300.59.158.1
dtb-sprd - update to 5.3.18-150300.59.158.1
dtb-renesas - update to 5.3.18-150300.59.158.1
dtb-freescale - update to 5.3.18-150300.59.158.1
dtb-allwinner - update to 5.3.18-150300.59.158.1
reiserfs-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
kselftests-kmp-preempt - update to 5.3.18-150300.59.158.1
kernel-preempt-optional-debuginfo - update to 5.3.18-150300.59.158.1
ocfs2-kmp-preempt - update to 5.3.18-150300.59.158.1
kernel-preempt-extra-debuginfo - update to 5.3.18-150300.59.158.1
gfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
kernel-preempt-extra - update to 5.3.18-150300.59.158.1
cluster-md-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
reiserfs-kmp-preempt - update to 5.3.18-150300.59.158.1
dlm-kmp-preempt - update to 5.3.18-150300.59.158.1
kernel-preempt-optional - update to 5.3.18-150300.59.158.1
dlm-kmp-preempt-debuginfo - update to 5.3.18-150300.59.158.1
dtb-nvidia - update to 5.3.18-150300.59.158.1
dtb-amlogic - update to 5.3.18-150300.59.158.1
ocfs2-kmp-64kb - update to 5.3.18-150300.59.158.1
dlm-kmp-64kb - update to 5.3.18-150300.59.158.1
cluster-md-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
ocfs2-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
reiserfs-kmp-64kb - update to 5.3.18-150300.59.158.1
dtb-rockchip - update to 5.3.18-150300.59.158.1
kernel-64kb-extra - update to 5.3.18-150300.59.158.1
dtb-arm - update to 5.3.18-150300.59.158.1
kernel-64kb-optional - update to 5.3.18-150300.59.158.1
kernel-64kb-livepatch-devel - update to 5.3.18-150300.59.158.1
dlm-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
dtb-zte - update to 5.3.18-150300.59.158.1
dtb-cavium - update to 5.3.18-150300.59.158.1
gfs2-kmp-64kb - update to 5.3.18-150300.59.158.1
dtb-marvell - update to 5.3.18-150300.59.158.1
kernel-64kb-extra-debuginfo - update to 5.3.18-150300.59.158.1
dtb-apm - update to 5.3.18-150300.59.158.1
dtb-mediatek - update to 5.3.18-150300.59.158.1
dtb-socionext - update to 5.3.18-150300.59.158.1
kernel-64kb-optional-debuginfo - update to 5.3.18-150300.59.158.1
reiserfs-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
cluster-md-kmp-64kb - update to 5.3.18-150300.59.158.1
dtb-broadcom - update to 5.3.18-150300.59.158.1
dtb-al - update to 5.3.18-150300.59.158.1
kselftests-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
dtb-xilinx - update to 5.3.18-150300.59.158.1
dtb-exynos - update to 5.3.18-150300.59.158.1
dtb-amd - update to 5.3.18-150300.59.158.1
dtb-altera - update to 5.3.18-150300.59.158.1
dtb-lg - update to 5.3.18-150300.59.158.1
gfs2-kmp-64kb-debuginfo - update to 5.3.18-150300.59.158.1
dtb-hisilicon - update to 5.3.18-150300.59.158.1
kernel-kvmsmall - update to 5.3.18-150300.59.158.1
kernel-source-vanilla - update to 5.3.18-150300.59.158.1
kernel-docs-html - update to 5.3.18-150300.59.158.1
kernel-64kb-debuginfo - update to 5.3.18-150300.59.158.1
kernel-64kb-devel-debuginfo - update to 5.3.18-150300.59.158.1
kernel-64kb-debugsource - update to 5.3.18-150300.59.158.1
kernel-64kb-devel - update to 5.3.18-150300.59.158.1
kernel-64kb - update to 5.3.18-150300.59.158.1
kernel-debug-debuginfo - update to 5.3.18-150300.59.158.1
kernel-obs-qa - update to 5.3.18-150300.59.158.1
kernel-default-optional-debuginfo - update to 5.3.18-150300.59.158.1
kernel-default-optional - update to 5.3.18-150300.59.158.1
kernel-default-extra-debuginfo - update to 5.3.18-150300.59.158.1
kselftests-kmp-default-debuginfo - update to 5.3.18-150300.59.158.1
kernel-default-extra - update to 5.3.18-150300.59.158.1
kselftests-kmp-default - update to 5.3.18-150300.59.158.1
kernel-kvmsmall-devel-debuginfo - update to 5.3.18-150300.59.158.1
kernel-debug-debugsource - update to 5.3.18-150300.59.158.1
kernel-kvmsmall-debugsource - update to 5.3.18-150300.59.158.1
kernel-debug-devel-debuginfo - update to 5.3.18-150300.59.158.1
kernel-kvmsmall-debuginfo - update to 5.3.18-150300.59.158.1
kernel-kvmsmall-livepatch-devel - update to 5.3.18-150300.59.158.1
kernel-kvmsmall-devel - update to 5.3.18-150300.59.158.1
kernel-debug-devel - update to 5.3.18-150300.59.158.1
kernel-debug-livepatch-devel - update to 5.3.18-150300.59.158.1
kernel-debug - update to 5.3.18-150300.59.158.1
kernel-default-base-rebuild - update to 5.3.18-150300.59.158.1.150300.18.92.5
kernel-source-rt - update to 5.3.18-150300.166.1
kernel-rt-debuginfo - update to 5.3.18-150300.166.1
kernel-rt-debugsource - update to 5.3.18-150300.166.1
kernel-rt - update to 5.3.18-150300.166.1

External References

Related Security Bulletins