Memory leak in Linux kernel - CVE-2020-36766

Vulnerability identifier: #VU81922

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-2020-36766

CWE-ID: CWE-401

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 due memory leak in drivers/media/cec/core/cec-api.c in Linux kernel. A local user can force the system to leak memory.

Linux kernel
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Real Time 12
SUSE CaaS Platform
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
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
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 LTSS
SUSE Linux Enterprise Server 15 SP3 Business Critical Linux
openSUSE Leap
openEuler
kgraft-patch-4_12_14-122_179-default
kernel-livepatch-4_12_14-150100_197_160-default
kernel-livepatch-5_3_18-150200_24_166-default-debuginfo
kernel-livepatch-5_3_18-150200_24_166-default
kernel-livepatch-SLE15-SP2_Update_41-debugsource
kernel-livepatch-5_3_18-150300_59_138-default
cluster-md-kmp-rt
kernel-rt-debugsource
dlm-kmp-rt-debuginfo
kernel-rt_debug-devel-debuginfo
kernel-rt-base-debuginfo
kernel-rt_debug-debugsource
gfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
kernel-syms-rt
kernel-rt_debug-debuginfo
kernel-rt-devel-debuginfo
ocfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt_debug-devel
dlm-kmp-rt
kernel-devel-rt
kernel-source-rt
kernel-rt
kernel-rt_debug
kernel-rt-base
kernel-azure-base
kernel-devel-azure
kernel-source-azure
kernel-azure-base-debuginfo
kernel-syms-azure
kernel-azure-debugsource
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure
kernel-default
kernel-default-debuginfo
gfs2-kmp-default
kernel-obs-build-debugsource
kernel-default-base-debuginfo
kernel-default-devel
kernel-default-base
kernel-syms
kernel-source
kernel-macros
kernel-devel
kernel-default-extra
kernel-default-extra-debuginfo
kernel-obs-build
dlm-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default-debuginfo
cluster-md-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-man
kernel-default-devel-debuginfo
kernel-docs
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-default-debugsource
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-debug
kernel-zfcpdump
kernel-kvmsmall
kernel-debug-base
kernel-debug-base-debuginfo
kernel-vanilla-debuginfo
kernel-vanilla-base
kernel-vanilla-livepatch-devel
kernel-vanilla-devel
kernel-vanilla-base-debuginfo
kernel-vanilla-devel-debuginfo
kernel-vanilla-debugsource
kernel-kvmsmall-base-debuginfo
kernel-kvmsmall-base
kernel-vanilla
kernel-zfcpdump-man
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-debuginfo
kernel
python2-perf
kernel-tools
kernel-tools-debuginfo
bpftool
perf
kernel-tools-devel
bpftool-debuginfo
python2-perf-debuginfo
python3-perf
perf-debuginfo
python3-perf-debuginfo
kernel-debugsource
kernel-preempt-debuginfo
kernel-preempt-devel
kernel-preempt-devel-debuginfo
kernel-preempt-debugsource
kernel-preempt
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb
RecoverPoint for VMs
Dell EMC NetWorker vProxy

Install updates from vendor's website.

Linux kernel - update to 5.8.6
kgraft-patch-4_12_14-122_179-default - update to 1-8.3.1
kernel-livepatch-4_12_14-150100_197_160-default - update to 1-150100.3.3.1
kernel-livepatch-5_3_18-150200_24_166-default-debuginfo - update to 1-150200.5.3.1
kernel-livepatch-5_3_18-150200_24_166-default - update to 1-150200.5.3.1
kernel-livepatch-SLE15-SP2_Update_41-debugsource - update to 1-150200.5.3.1
kernel-livepatch-5_3_18-150300_59_138-default - update to 1-150300.7.5.1
cluster-md-kmp-rt - update to 4.12.14-10.144.1
kernel-rt-debugsource - addressed in versions 4.12.14-10.144.1, 5.3.18-150300.144.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.144.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.144.1
kernel-rt-base-debuginfo - update to 4.12.14-10.144.1
kernel-rt_debug-debugsource - update to 4.12.14-10.144.1
gfs2-kmp-rt - update to 4.12.14-10.144.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.144.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.144.1
kernel-rt-devel - update to 4.12.14-10.144.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.144.1
kernel-syms-rt - update to 4.12.14-10.144.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.144.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.144.1
ocfs2-kmp-rt - update to 4.12.14-10.144.1
kernel-rt-debuginfo - addressed in versions 4.12.14-10.144.1, 5.3.18-150300.144.1
kernel-rt_debug-devel - update to 4.12.14-10.144.1
dlm-kmp-rt - update to 4.12.14-10.144.1
kernel-devel-rt - update to 4.12.14-10.144.1
kernel-source-rt - update to 4.12.14-10.144.1
kernel-rt - addressed in versions 4.12.14-10.144.1, 5.3.18-150300.144.1
kernel-rt_debug - update to 4.12.14-10.144.1
kernel-rt-base - update to 4.12.14-10.144.1
kernel-azure-base - update to 4.12.14-16.152.1
kernel-devel-azure - update to 4.12.14-16.152.1
kernel-source-azure - update to 4.12.14-16.152.1
kernel-azure-base-debuginfo - update to 4.12.14-16.152.1
kernel-syms-azure - update to 4.12.14-16.152.1
kernel-azure-debugsource - update to 4.12.14-16.152.1
kernel-azure-devel - update to 4.12.14-16.152.1
kernel-azure-debuginfo - update to 4.12.14-16.152.1
kernel-azure - update to 4.12.14-16.152.1
kernel-default - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
gfs2-kmp-default - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-obs-build-debugsource - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-base-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1
kernel-default-devel - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-base - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1.150200.9.83.1, 5.3.18-150300.59.138.1.150300.18.80.2
kernel-syms - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-source - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-macros - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-devel - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-extra - update to 4.12.14-122.179.1
kernel-default-extra-debuginfo - update to 4.12.14-122.179.1
kernel-obs-build - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
dlm-kmp-default - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-man - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-docs - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.2, 5.3.18-150300.59.138.1
kernel-default-kgraft - update to 4.12.14-122.179.1
kernel-default-kgraft-devel - update to 4.12.14-122.179.1
kernel-default-debugsource - addressed in versions 4.12.14-122.179.1, 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-zfcpdump-debugsource - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150300.59.138.1
kernel-zfcpdump-debuginfo - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150300.59.138.1
reiserfs-kmp-default - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
reiserfs-kmp-default-debuginfo - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-debug - update to 4.12.14-150100.197.160.1
kernel-zfcpdump - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150300.59.138.1
kernel-kvmsmall - update to 4.12.14-150100.197.160.1
kernel-debug-base - update to 4.12.14-150100.197.160.1
kernel-debug-base-debuginfo - update to 4.12.14-150100.197.160.1
kernel-vanilla-debuginfo - update to 4.12.14-150100.197.160.1
kernel-vanilla-base - update to 4.12.14-150100.197.160.1
kernel-vanilla-livepatch-devel - update to 4.12.14-150100.197.160.1
kernel-vanilla-devel - update to 4.12.14-150100.197.160.1
kernel-vanilla-base-debuginfo - update to 4.12.14-150100.197.160.1
kernel-vanilla-devel-debuginfo - update to 4.12.14-150100.197.160.1
kernel-vanilla-debugsource - update to 4.12.14-150100.197.160.1
kernel-kvmsmall-base-debuginfo - update to 4.12.14-150100.197.160.1
kernel-kvmsmall-base - update to 4.12.14-150100.197.160.1
kernel-vanilla - update to 4.12.14-150100.197.160.1
kernel-zfcpdump-man - update to 4.12.14-150100.197.160.1
kernel-default-livepatch-devel - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-default-livepatch - addressed in versions 4.12.14-150100.197.160.1, 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-debuginfo - update to 4.19.90-2310.2.0.0221
kernel - update to 4.19.90-2310.2.0.0221
python2-perf - update to 4.19.90-2310.2.0.0221
kernel-source - update to 4.19.90-2310.2.0.0221
kernel-tools - update to 4.19.90-2310.2.0.0221
kernel-tools-debuginfo - update to 4.19.90-2310.2.0.0221
bpftool - update to 4.19.90-2310.2.0.0221
perf - update to 4.19.90-2310.2.0.0221
kernel-tools-devel - update to 4.19.90-2310.2.0.0221
bpftool-debuginfo - update to 4.19.90-2310.2.0.0221
python2-perf-debuginfo - update to 4.19.90-2310.2.0.0221
python3-perf - update to 4.19.90-2310.2.0.0221
kernel-devel - update to 4.19.90-2310.2.0.0221
perf-debuginfo - update to 4.19.90-2310.2.0.0221
python3-perf-debuginfo - update to 4.19.90-2310.2.0.0221
kernel-debugsource - update to 4.19.90-2310.2.0.0221
kernel-preempt-debuginfo - addressed in versions 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-preempt-devel - addressed in versions 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-preempt-devel-debuginfo - addressed in versions 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-preempt-debugsource - addressed in versions 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-preempt - addressed in versions 5.3.18-150200.24.166.1, 5.3.18-150300.59.138.1
kernel-64kb-devel-debuginfo - update to 5.3.18-150300.59.138.1
kernel-64kb-debuginfo - update to 5.3.18-150300.59.138.1
kernel-64kb-devel - update to 5.3.18-150300.59.138.1
kernel-64kb-debugsource - update to 5.3.18-150300.59.138.1
kernel-64kb - update to 5.3.18-150300.59.138.1
RecoverPoint for VMs - update to 6.0.SP1.P1
Dell EMC NetWorker vProxy - addressed in versions 19.9.0.4, 19.10

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.6
• https://github.com/torvalds/linux/commit/6c42227c3467549ddc65efe99c869021d2f4a570

• Information disclosure in Linux kernel cec driver
• 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
• Dell EMC NetWorker vProxy update for third-party components
• openEuler 20.03 LTS SP1 update for kernel
• openEuler 20.03 LTS SP3 update for kernel
• Multiple vulnerabilities in Dell RecoverPoint for Virtual Machines