Buffer overflow in Linux kernel - CVE-2021-47352

Vulnerability identifier: #VU93170

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-2021-47352

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to memory corruption within the receive_small(), rcu_read_unlock() and receive_mergeable() functions in drivers/net/virtio_net.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Oracle Linux
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Real Time 12
Anolis OS
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
SUSE Linux Enterprise Workstation Extension 12
SUSE Linux Enterprise Live Patching
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kgraft-patch-4_12_14-122_219-default
dlm-kmp-rt
kernel-syms-rt
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-base
kernel-rt-base-debuginfo
ocfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kernel-rt_debug-devel
kernel-devel-rt
kernel-rt_debug-devel-debuginfo
cluster-md-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-debugsource
kernel-rt-debugsource
kernel-rt-devel
gfs2-kmp-rt-debuginfo
kernel-source-rt
kernel-rt
kernel-rt_debug
kernel-azure-base
kernel-azure
kernel-devel-azure
kernel-azure-debugsource
kernel-azure-base-debuginfo
kernel-azure-devel
kernel-azure-debuginfo
kernel-source-azure
kernel-syms-azure
kernel-source
kernel-default
kernel-devel
kernel-default-devel-debuginfo
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-man
kernel-default-extra-debuginfo
kernel-default-extra
gfs2-kmp-default
kernel-default-base-debuginfo
kernel-default-base
ocfs2-kmp-default
gfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-syms
cluster-md-kmp-default
dlm-kmp-default
kernel-macros
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
cluster-md-kmp-default-debuginfo
kernel-default-devel
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-headers
kernel-modules
kernel-modules-extra
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python3-perf
kernel-doc
kernel-abi-stablelists
kernel-debug-modules-extra
kernel-debug-modules
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-cross-headers
kernel-core
kernel
bpftool
Cloud Pak for Network Automation
Technical Support Appliance
IBM Cloud Pak for Watson AIOps
Red Hat OpenShift Container Platform
OpenShift Logging
Dell Secure Connect Gateway

Install update from vendor's website.

Linux kernel - addressed in versions 5.4.293, 5.10.51, 5.12.18, 5.13.3, 5.14
kgraft-patch-4_12_14-122_219-default - update to 1-8.3.1
Cloud Pak for Network Automation - update to 2.7.7
Technical Support Appliance - update to 3.0.1
IBM Cloud Pak for Watson AIOps - update to 4.7.0
dlm-kmp-rt - update to 4.12.14-10.188.1
kernel-syms-rt - update to 4.12.14-10.188.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.188.1
gfs2-kmp-rt - update to 4.12.14-10.188.1
kernel-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.188.1
kernel-rt-base - update to 4.12.14-10.188.1
kernel-rt-base-debuginfo - update to 4.12.14-10.188.1
ocfs2-kmp-rt - update to 4.12.14-10.188.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.188.1
kernel-rt_debug-devel - update to 4.12.14-10.188.1
kernel-devel-rt - update to 4.12.14-10.188.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.188.1
cluster-md-kmp-rt - update to 4.12.14-10.188.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.188.1
kernel-rt_debug-debugsource - update to 4.12.14-10.188.1
kernel-rt-debugsource - update to 4.12.14-10.188.1
kernel-rt-devel - update to 4.12.14-10.188.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.188.1
kernel-source-rt - update to 4.12.14-10.188.1
kernel-rt - update to 4.12.14-10.188.1
kernel-rt_debug - update to 4.12.14-10.188.1
kernel-azure-base - update to 4.12.14-16.188.1
kernel-azure - update to 4.12.14-16.188.1
kernel-devel-azure - update to 4.12.14-16.188.1
kernel-azure-debugsource - update to 4.12.14-16.188.1
kernel-azure-base-debuginfo - update to 4.12.14-16.188.1
kernel-azure-devel - update to 4.12.14-16.188.1
kernel-azure-debuginfo - update to 4.12.14-16.188.1
kernel-source-azure - update to 4.12.14-16.188.1
kernel-syms-azure - update to 4.12.14-16.188.1
kernel-source - update to 4.12.14-122.219.1
kernel-default - update to 4.12.14-122.219.1
kernel-devel - update to 4.12.14-122.219.1
kernel-default-devel-debuginfo - update to 4.12.14-122.219.1
kernel-default-kgraft - update to 4.12.14-122.219.1
kernel-default-kgraft-devel - update to 4.12.14-122.219.1
kernel-docs - update to 4.12.14-122.219.1
kernel-obs-build - update to 4.12.14-122.219.1
kernel-obs-build-debugsource - update to 4.12.14-122.219.1
kernel-default-man - update to 4.12.14-122.219.1
kernel-default-extra-debuginfo - update to 4.12.14-122.219.1
kernel-default-extra - update to 4.12.14-122.219.1
gfs2-kmp-default - update to 4.12.14-122.219.1
kernel-default-base-debuginfo - update to 4.12.14-122.219.1
kernel-default-base - update to 4.12.14-122.219.1
ocfs2-kmp-default - update to 4.12.14-122.219.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.219.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.219.1
kernel-syms - update to 4.12.14-122.219.1
cluster-md-kmp-default - update to 4.12.14-122.219.1
dlm-kmp-default - update to 4.12.14-122.219.1
kernel-macros - update to 4.12.14-122.219.1
kernel-default-debuginfo - update to 4.12.14-122.219.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.219.1
kernel-default-debugsource - update to 4.12.14-122.219.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.219.1
kernel-default-devel - update to 4.12.14-122.219.1
Red Hat OpenShift Container Platform - addressed in versions 4.12.65, 4.13.52, 4.14.38, 4.15.35
kernel (Red Hat package) - addressed in versions 4.18.0-372.123.1.el8_6, 4.18.0-477.74.1.el8_8, 4.18.0-553.22.1.el8_10
kernel-rt (Red Hat package) - update to 4.18.0-553.22.1.rt7.363.el8_10
kernel-devel - update to 4.18.0-553.22.1.0.1
kernel-headers - update to 4.18.0-553.22.1.0.1
kernel-modules - update to 4.18.0-553.22.1.0.1
kernel-modules-extra - update to 4.18.0-553.22.1.0.1
kernel-tools - update to 4.18.0-553.22.1.0.1
kernel-tools-libs - update to 4.18.0-553.22.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.22.1.0.1
perf - update to 4.18.0-553.22.1.0.1
python3-perf - update to 4.18.0-553.22.1.0.1
kernel-doc - update to 4.18.0-553.22.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.22.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.22.1.0.1
kernel-debug-modules - update to 4.18.0-553.22.1.0.1
kernel-debug-devel - update to 4.18.0-553.22.1.0.1
kernel-debug-core - update to 4.18.0-553.22.1.0.1
kernel-debug - update to 4.18.0-553.22.1.0.1
kernel-cross-headers - update to 4.18.0-553.22.1.0.1
kernel-core - update to 4.18.0-553.22.1.0.1
kernel - update to 4.18.0-553.22.1.0.1
bpftool - update to 4.18.0-553.22.1.0.1
OpenShift Logging - update to 5.6.25
Dell Secure Connect Gateway - update to 5.26.00.18

• https://git.kernel.org/stable/c/c92298d228f61589dd21657af2bea95fc866b813
• https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c
• https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292
• https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.51
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.18
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.293

• Buffer overflow in Linux kernel net driver
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.12
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.15
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.14
• Red Hat Enterprise Linux 8 update for kernel
• Multiple vulnerabilities in Oracle Linux
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.13
• Multiple vulnerabilities in OpenShift Logging 5.6
• Multiple vulnerabilities in IBM Cloud Pak for Network Automation
• Multiple vulnerabilities in IBM Technical Support Appliance
• Multiple vulnerabilities in Dell Secure Connect Gateway
• Multiple vulnerabilities in IBM Cloud Pak for AIOps
• Anolis OS update for kernel