NULL pointer dereference in Linux kernel - CVE-2022-50406

Vulnerability identifier: #VU115919

CSH Severity: Low

CVSS v4: 6.8 [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]

CVE-ID: CVE-2022-50406

CWE-ID: CWE-476

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 NULL pointer dereference within the iomap_writepage_map() function in fs/iomap/buffered-io.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Micro
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
SUSE Linux Enterprise Live Patching
openSUSE Leap
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kgraft-patch-4_12_14-122_275-default
kernel-livepatch-SLE15-SP5_Update_31-debugsource
kernel-livepatch-5_14_21-150500_55_124-default-debuginfo
kernel-livepatch-5_14_21-150500_55_124-default
kernel-doc
bpftool
kernel
kernel-debug
kernel-debug-devel
kernel-devel
kernel-headers
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python-perf
kernel-abi-whitelists
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-macros
kernel-default-kgraft
gfs2-kmp-default
kernel-default-man
kernel-default
dlm-kmp-default-debuginfo
kernel-default-base-debuginfo
kernel-default-debugsource
kernel-default-devel
cluster-md-kmp-default-debuginfo
kernel-default-base
kernel-syms
kernel-default-devel-debuginfo
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-source
kernel-default-kgraft-devel
kernel-devel-rt
cluster-md-kmp-rt
kernel-rt-devel
kernel-rt_debug-debuginfo
kernel-rt-optional
gfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt-extra
kernel-rt-vdso
kernel-rt_debug-devel
ocfs2-kmp-rt
kselftests-kmp-rt
kernel-source-rt
kernel-rt-livepatch-devel
kernel-rt-extra-debuginfo
kernel-rt_debug-debugsource
kernel-rt-livepatch
kernel-syms-rt
kernel-rt-debugsource
kernel-rt_debug-devel-debuginfo
dlm-kmp-rt
kernel-rt_debug-vdso-debuginfo
reiserfs-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt_debug
kernel-rt
kernel-rt-debuginfo
kernel-rt_debug-vdso
kernel-rt-devel-debuginfo
cluster-md-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-optional-debuginfo
kernel-docs
kernel-64kb
ocfs2-kmp-64kb-debuginfo
dtb-exynos
kernel-64kb-debuginfo
dtb-broadcom
dtb-amazon
kernel-64kb-devel-debuginfo
dtb-allwinner
dlm-kmp-64kb-debuginfo
dtb-amd
kernel-obs-build-debugsource
kernel-source-vanilla
kernel-docs-html
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel
kernel-default-extra
kernel-default-optional-debuginfo
dtb-xilinx
kernel-kvmsmall-vdso
kernel-default-livepatch
kernel-default-livepatch-devel
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debugsource
dtb-qcom
kernel-zfcpdump-debuginfo
kselftests-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-extra-debuginfo
kselftests-kmp-default-debuginfo
reiserfs-kmp-default
kernel-obs-build
kernel-default-optional
kernel-obs-qa
reiserfs-kmp-64kb-debuginfo
dtb-aarch64
reiserfs-kmp-64kb
dtb-apple
dtb-marvell
kernel-64kb-extra-debuginfo
dtb-rockchip
kernel-64kb-extra
dtb-lg
dtb-hisilicon
dtb-nvidia
dtb-socionext
cluster-md-kmp-64kb
dlm-kmp-64kb
kselftests-kmp-64kb-debuginfo
dtb-apm
ocfs2-kmp-64kb
kernel-64kb-debugsource
dtb-amlogic
dtb-altera
dtb-cavium
cluster-md-kmp-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
kselftests-kmp-64kb
kernel-64kb-optional
gfs2-kmp-64kb
kernel-64kb-optional-debuginfo
dtb-freescale
dtb-renesas
dtb-arm
dtb-mediatek
dtb-sprd
kernel-64kb-devel
kernel-default-base-rebuild

Install update from vendor's repository.

Linux kernel - update to 5.19.17
kgraft-patch-4_12_14-122_275-default - update to 1-8.3.1
kernel-livepatch-SLE15-SP5_Update_31-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_124-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_124-default - update to 1-150500.11.3.1
kernel-doc - update to 3.10.0-1160.144.1
bpftool - update to 3.10.0-1160.144.1
kernel - update to 3.10.0-1160.144.1
kernel-debug - update to 3.10.0-1160.144.1
kernel-debug-devel - update to 3.10.0-1160.144.1
kernel-devel - update to 3.10.0-1160.144.1
kernel-headers - update to 3.10.0-1160.144.1
kernel-tools - update to 3.10.0-1160.144.1
kernel-tools-libs - update to 3.10.0-1160.144.1
kernel-tools-libs-devel - update to 3.10.0-1160.144.1
perf - update to 3.10.0-1160.144.1
python-perf - update to 3.10.0-1160.144.1
kernel-abi-whitelists - update to 3.10.0-1160.144.1
kernel (Red Hat package) - addressed in versions 3.10.0-1160.144.1.el7, 4.18.0-193.178.1.el8_2, 4.18.0-372.168.1.el8_6, 5.14.0-70.153.1.el9_0, 5.14.0-284.146.1.el9_2
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1160.144.1.rt56.1296.el7, 5.14.0-70.153.1.rt21.225.el9_0, 5.14.0-284.146.1.rt14.431.el9_2
kernel-macros - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-kgraft - update to 4.12.14-122.275.1
gfs2-kmp-default - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-man - update to 4.12.14-122.275.1
kernel-default - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-base-debuginfo - update to 4.12.14-122.275.1
kernel-default-debugsource - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-devel - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-base - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1.150500.6.59.1
kernel-syms - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
dlm-kmp-default - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-devel - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-source - addressed in versions 4.12.14-122.275.1, 5.14.21-150500.55.124.1
kernel-default-kgraft-devel - update to 4.12.14-122.275.1
kernel-devel-rt - update to 5.14.21-150500.13.109.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.109.1
kernel-rt-devel - update to 5.14.21-150500.13.109.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt-optional - update to 5.14.21-150500.13.109.1
gfs2-kmp-rt - update to 5.14.21-150500.13.109.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt-extra - update to 5.14.21-150500.13.109.1
kernel-rt-vdso - update to 5.14.21-150500.13.109.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.109.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.109.1
kselftests-kmp-rt - update to 5.14.21-150500.13.109.1
kernel-source-rt - update to 5.14.21-150500.13.109.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.109.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.109.1
kernel-rt-livepatch - update to 5.14.21-150500.13.109.1
kernel-syms-rt - update to 5.14.21-150500.13.109.1
kernel-rt-debugsource - update to 5.14.21-150500.13.109.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.109.1
dlm-kmp-rt - update to 5.14.21-150500.13.109.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.109.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.109.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt_debug - update to 5.14.21-150500.13.109.1
kernel-rt - update to 5.14.21-150500.13.109.1
kernel-rt-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.109.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.109.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.109.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.109.1
kernel-docs - update to 5.14.21-150500.55.124.1
kernel-64kb - update to 5.14.21-150500.55.124.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
dtb-exynos - update to 5.14.21-150500.55.124.1
kernel-64kb-debuginfo - update to 5.14.21-150500.55.124.1
dtb-broadcom - update to 5.14.21-150500.55.124.1
dtb-amazon - update to 5.14.21-150500.55.124.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.124.1
dtb-allwinner - update to 5.14.21-150500.55.124.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
dtb-amd - update to 5.14.21-150500.55.124.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.124.1
kernel-source-vanilla - update to 5.14.21-150500.55.124.1
kernel-docs-html - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-devel - update to 5.14.21-150500.55.124.1
kernel-default-extra - update to 5.14.21-150500.55.124.1
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.124.1
dtb-xilinx - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.124.1
kernel-default-livepatch - update to 5.14.21-150500.55.124.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.124.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.124.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.124.1
kernel-default-vdso - update to 5.14.21-150500.55.124.1
kernel-kvmsmall - update to 5.14.21-150500.55.124.1
kernel-zfcpdump - update to 5.14.21-150500.55.124.1
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.124.1
dtb-qcom - update to 5.14.21-150500.55.124.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.124.1
kselftests-kmp-default - update to 5.14.21-150500.55.124.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.124.1
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.124.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.124.1
reiserfs-kmp-default - update to 5.14.21-150500.55.124.1
kernel-obs-build - update to 5.14.21-150500.55.124.1
kernel-default-optional - update to 5.14.21-150500.55.124.1
kernel-obs-qa - update to 5.14.21-150500.55.124.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
dtb-aarch64 - update to 5.14.21-150500.55.124.1
reiserfs-kmp-64kb - update to 5.14.21-150500.55.124.1
dtb-apple - update to 5.14.21-150500.55.124.1
dtb-marvell - update to 5.14.21-150500.55.124.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.124.1
dtb-rockchip - update to 5.14.21-150500.55.124.1
kernel-64kb-extra - update to 5.14.21-150500.55.124.1
dtb-lg - update to 5.14.21-150500.55.124.1
dtb-hisilicon - update to 5.14.21-150500.55.124.1
dtb-nvidia - update to 5.14.21-150500.55.124.1
dtb-socionext - update to 5.14.21-150500.55.124.1
cluster-md-kmp-64kb - update to 5.14.21-150500.55.124.1
dlm-kmp-64kb - update to 5.14.21-150500.55.124.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
dtb-apm - update to 5.14.21-150500.55.124.1
ocfs2-kmp-64kb - update to 5.14.21-150500.55.124.1
kernel-64kb-debugsource - update to 5.14.21-150500.55.124.1
dtb-amlogic - update to 5.14.21-150500.55.124.1
dtb-altera - update to 5.14.21-150500.55.124.1
dtb-cavium - update to 5.14.21-150500.55.124.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.124.1
kselftests-kmp-64kb - update to 5.14.21-150500.55.124.1
kernel-64kb-optional - update to 5.14.21-150500.55.124.1
gfs2-kmp-64kb - update to 5.14.21-150500.55.124.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.124.1
dtb-freescale - update to 5.14.21-150500.55.124.1
dtb-renesas - update to 5.14.21-150500.55.124.1
dtb-arm - update to 5.14.21-150500.55.124.1
dtb-mediatek - update to 5.14.21-150500.55.124.1
dtb-sprd - update to 5.14.21-150500.55.124.1
kernel-64kb-devel - update to 5.14.21-150500.55.124.1
kernel-default-base-rebuild - update to 5.14.21-150500.55.124.1.150500.6.59.1

• https://git.kernel.org/stable/c/3d5f3ba1ac28059bdf7000cae2403e4e984308d2
• https://git.kernel.org/stable/c/7308591d9c7787aec58f6a01a7823f14e90db7a2
• https://git.kernel.org/stable/c/82c66c46f73b88be74c869e2cbfef45281adf3c6
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17

• NULL pointer dereference in Linux kernel iomap
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Red Hat Enterprise Linux 9 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 9 update for kernel
• Red Hat Enterprise Linux 9 update for kernel-rt
• Red Hat Enterprise Linux 9 update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel-rt
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel
• Anolis OS update for kernel:3.10