Buffer overflow in Linux kernel - CVE-2022-50020

Vulnerability identifier: #VU111628

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-50020

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to memory corruption within the ext4_resize_fs() function in fs/ext4/resize.c. A local user can escalate privileges on the system.

Linux kernel
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
SUSE Linux Enterprise Live Patching
openSUSE Leap
IBM Qradar SIEM
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-SLE15-SP4_Update_42-debugsource
kernel-livepatch-5_14_21-150400_24_170-default-debuginfo
kernel-livepatch-5_14_21-150400_24_170-default
kernel-livepatch-5_14_21-150500_55_113-default
kernel-livepatch-SLE15-SP5_Update_28-debugsource
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-debug-modules-extra
bpftool
kernel-debug-modules
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-cross-headers
kernel-core
kernel
kernel-headers
kernel-modules
kernel-modules-extra
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python3-perf
kernel-abi-stablelists
kernel-doc
kernel-devel
dtb-hisilicon
dtb-amazon
dtb-socionext
dtb-rockchip
dtb-marvell
dtb-amlogic
dtb-sprd
dtb-apm
dtb-xilinx
dtb-lg
dtb-mediatek
dtb-freescale
dtb-altera
dtb-allwinner
kernel-macros
dtb-aarch64
kernel-obs-qa
kernel-syms
kernel-source
dtb-qcom
dtb-renesas
dtb-amd
dtb-exynos
dtb-apple
dtb-arm
dtb-nvidia
dtb-cavium
dtb-broadcom
kernel-docs
kernel-docs-html
kernel-source-vanilla
kselftests-kmp-default
kernel-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-obs-build
reiserfs-kmp-default
kernel-default-devel
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
kernel-obs-build-debugsource
kernel-default-extra
kernel-default-livepatch
kernel-default-extra-debuginfo
gfs2-kmp-default
cluster-md-kmp-default
ocfs2-kmp-default
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-default-livepatch-devel
kernel-kvmsmall-debugsource
gfs2-kmp-64kb
kernel-default
reiserfs-kmp-64kb
kernel-zfcpdump-debuginfo
kselftests-kmp-64kb-debuginfo
kernel-64kb-debuginfo
kernel-default-optional-debuginfo
cluster-md-kmp-64kb-debuginfo
ocfs2-kmp-64kb
kernel-64kb-extra
kernel-64kb-devel-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-64kb-devel
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-extra-debuginfo
dlm-kmp-64kb
kselftests-kmp-64kb
kernel-64kb-optional-debuginfo
kernel-default-optional
kselftests-kmp-default-debuginfo
dlm-kmp-default
reiserfs-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-default-devel-debuginfo
kernel-kvmsmall
kernel-zfcpdump
kernel-64kb
cluster-md-kmp-64kb
kernel-zfcpdump-debugsource
kernel-64kb-debugsource
kernel-64kb-optional
kernel-default-base-rebuild
kernel-default-base
Technical Support Appliance
Red Hat OpenShift Container Platform

Install update from vendor's repository.

Linux kernel - update to 5.4.211
IBM Qradar SIEM - update to 7.5.0 Update Pack 13 IF01
kernel-livepatch-SLE15-SP4_Update_42-debugsource - update to 1-150400.9.3.2
kernel-livepatch-5_14_21-150400_24_170-default-debuginfo - update to 1-150400.9.3.2
kernel-livepatch-5_14_21-150400_24_170-default - update to 1-150400.9.3.2
kernel-livepatch-5_14_21-150500_55_113-default - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_28-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo - update to 1-150500.11.3.1
Technical Support Appliance - update to 3.1.0
kernel (Red Hat package) - addressed in versions 3.10.0-1160.137.1.el7, 4.18.0-193.164.1.el8_2, 4.18.0-305.168.1.el8_4, 4.18.0-372.157.1.el8_6, 4.18.0-477.106.1.el8_8, 5.14.0-70.142.1.el9_0
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1160.137.1.rt56.1289.el7, 4.18.0-553.66.1.rt7.407.el8_10, 5.14.0-70.142.1.rt21.214.el9_0
Red Hat OpenShift Container Platform - update to 4.14.55
kernel-debug-modules-extra - update to 4.18.0-553.66.1.0.1
bpftool - update to 4.18.0-553.66.1.0.1
kernel-debug-modules - update to 4.18.0-553.66.1.0.1
kernel-debug-devel - update to 4.18.0-553.66.1.0.1
kernel-debug-core - update to 4.18.0-553.66.1.0.1
kernel-debug - update to 4.18.0-553.66.1.0.1
kernel-cross-headers - update to 4.18.0-553.66.1.0.1
kernel-core - update to 4.18.0-553.66.1.0.1
kernel - update to 4.18.0-553.66.1.0.1
kernel-headers - update to 4.18.0-553.66.1.0.1
kernel-modules - update to 4.18.0-553.66.1.0.1
kernel-modules-extra - update to 4.18.0-553.66.1.0.1
kernel-tools - update to 4.18.0-553.66.1.0.1
kernel-tools-libs - update to 4.18.0-553.66.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.66.1.0.1
perf - update to 4.18.0-553.66.1.0.1
python3-perf - update to 4.18.0-553.66.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.66.1.0.1
kernel-doc - update to 4.18.0-553.66.1.0.1
kernel-devel - update to 4.18.0-553.66.1.0.1
dtb-hisilicon - update to 5.14.21-150400.24.170.1
dtb-amazon - update to 5.14.21-150400.24.170.1
dtb-socionext - update to 5.14.21-150400.24.170.1
dtb-rockchip - update to 5.14.21-150400.24.170.1
dtb-marvell - update to 5.14.21-150400.24.170.1
dtb-amlogic - update to 5.14.21-150400.24.170.1
dtb-sprd - update to 5.14.21-150400.24.170.1
dtb-apm - update to 5.14.21-150400.24.170.1
dtb-xilinx - update to 5.14.21-150400.24.170.1
dtb-lg - update to 5.14.21-150400.24.170.1
dtb-mediatek - update to 5.14.21-150400.24.170.1
dtb-freescale - update to 5.14.21-150400.24.170.1
dtb-altera - update to 5.14.21-150400.24.170.1
dtb-allwinner - update to 5.14.21-150400.24.170.1
kernel-macros - update to 5.14.21-150400.24.170.1
dtb-aarch64 - update to 5.14.21-150400.24.170.1
kernel-obs-qa - update to 5.14.21-150400.24.170.1
kernel-syms - update to 5.14.21-150400.24.170.1
kernel-source - update to 5.14.21-150400.24.170.1
kernel-devel - update to 5.14.21-150400.24.170.1
dtb-qcom - update to 5.14.21-150400.24.170.1
dtb-renesas - update to 5.14.21-150400.24.170.1
dtb-amd - update to 5.14.21-150400.24.170.1
dtb-exynos - update to 5.14.21-150400.24.170.1
dtb-apple - update to 5.14.21-150400.24.170.1
dtb-arm - update to 5.14.21-150400.24.170.1
dtb-nvidia - update to 5.14.21-150400.24.170.1
dtb-cavium - update to 5.14.21-150400.24.170.1
dtb-broadcom - update to 5.14.21-150400.24.170.1
kernel-docs - update to 5.14.21-150400.24.170.1
kernel-docs-html - update to 5.14.21-150400.24.170.1
kernel-source-vanilla - update to 5.14.21-150400.24.170.1
kselftests-kmp-default - update to 5.14.21-150400.24.170.2
kernel-default-debuginfo - addressed in versions 5.14.21-150400.24.170.2, 5.14.21-150500.55.113.1
gfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
kernel-obs-build - update to 5.14.21-150400.24.170.2
reiserfs-kmp-default - update to 5.14.21-150400.24.170.2
kernel-default-devel - update to 5.14.21-150400.24.170.2
cluster-md-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
ocfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
kernel-default-debugsource - addressed in versions 5.14.21-150400.24.170.2, 5.14.21-150500.55.113.1
kernel-obs-build-debugsource - update to 5.14.21-150400.24.170.2
kernel-default-extra - update to 5.14.21-150400.24.170.2
kernel-default-livepatch - addressed in versions 5.14.21-150400.24.170.2, 5.14.21-150500.55.113.1
kernel-default-extra-debuginfo - update to 5.14.21-150400.24.170.2
gfs2-kmp-default - update to 5.14.21-150400.24.170.2
cluster-md-kmp-default - update to 5.14.21-150400.24.170.2
ocfs2-kmp-default - update to 5.14.21-150400.24.170.2
kernel-kvmsmall-devel - update to 5.14.21-150400.24.170.2
kernel-kvmsmall-debuginfo - update to 5.14.21-150400.24.170.2
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150400.24.170.2
kernel-default-livepatch-devel - addressed in versions 5.14.21-150400.24.170.2, 5.14.21-150500.55.113.1
kernel-kvmsmall-debugsource - update to 5.14.21-150400.24.170.2
gfs2-kmp-64kb - update to 5.14.21-150400.24.170.2
kernel-default - addressed in versions 5.14.21-150400.24.170.2, 5.14.21-150500.55.113.1
reiserfs-kmp-64kb - update to 5.14.21-150400.24.170.2
kernel-zfcpdump-debuginfo - update to 5.14.21-150400.24.170.2
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
kernel-64kb-debuginfo - update to 5.14.21-150400.24.170.2
kernel-default-optional-debuginfo - update to 5.14.21-150400.24.170.2
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
ocfs2-kmp-64kb - update to 5.14.21-150400.24.170.2
kernel-64kb-extra - update to 5.14.21-150400.24.170.2
kernel-64kb-devel-debuginfo - update to 5.14.21-150400.24.170.2
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
kernel-64kb-devel - update to 5.14.21-150400.24.170.2
dlm-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.170.2
kernel-64kb-extra-debuginfo - update to 5.14.21-150400.24.170.2
dlm-kmp-64kb - update to 5.14.21-150400.24.170.2
kselftests-kmp-64kb - update to 5.14.21-150400.24.170.2
kernel-64kb-optional-debuginfo - update to 5.14.21-150400.24.170.2
kernel-default-optional - update to 5.14.21-150400.24.170.2
kselftests-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
dlm-kmp-default - update to 5.14.21-150400.24.170.2
reiserfs-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
dlm-kmp-default-debuginfo - update to 5.14.21-150400.24.170.2
kernel-default-devel-debuginfo - update to 5.14.21-150400.24.170.2
kernel-kvmsmall - update to 5.14.21-150400.24.170.2
kernel-zfcpdump - update to 5.14.21-150400.24.170.2
kernel-64kb - update to 5.14.21-150400.24.170.2
cluster-md-kmp-64kb - update to 5.14.21-150400.24.170.2
kernel-zfcpdump-debugsource - update to 5.14.21-150400.24.170.2
kernel-64kb-debugsource - update to 5.14.21-150400.24.170.2
kernel-64kb-optional - update to 5.14.21-150400.24.170.2
kernel-default-base-rebuild - update to 5.14.21-150400.24.170.2.150400.24.86.2
kernel-default-base - update to 5.14.21-150400.24.170.2.150400.24.86.2

• https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1
• https://git.kernel.org/stable/c/53f62a4201be1cfc1e3c971e566888b182c3ffb0
• https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd
• https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8
• https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1
• https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074
• https://git.kernel.org/stable/c/952b3dc02baaae6a69c71c0aca23e06741182d9a
• https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.211

• Buffer overflow in Linux kernel ext4
• SUSE update for the Linux Kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Anolis OS update for kernel:4.18
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.14
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.14
• Red Hat Enterprise Linux 9 update for kernel
• Red Hat Enterprise Linux 9 update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Multiple vulnerabilities in IBM QRadar SIEM
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel-rt
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel
• Multiple vulnerabilities in IBM Technical Support Appliance
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel