NULL pointer dereference in Linux kernel - CVE-2022-1671

Vulnerability identifier: #VU64077

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-1671

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 a NULL pointer dereference error in the rxrpc_preparse_s in net/rxrpc/server_key.c in the Linux kernel. A local user can crash the system or leak internal kernel information.

Linux kernel
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise Module for Public Cloud
SUSE Linux Enterprise Workstation Extension
SUSE Linux Enterprise Module for Live Patching
SUSE Linux Enterprise Module for Legacy Software
SUSE Linux Enterprise Module for Development Tools
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise High Availability
openSUSE Leap
Ubuntu
kernel-livepatch-5_14_21-150400_24_11-default
kernel-livepatch-5_14_21-150400_24_11-default-debuginfo
kernel-livepatch-SLE15-SP4_Update_1-debugsource
kernel-source-azure
cluster-md-kmp-azure
cluster-md-kmp-azure-debuginfo
dlm-kmp-azure
dlm-kmp-azure-debuginfo
gfs2-kmp-azure
gfs2-kmp-azure-debuginfo
kernel-azure
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-azure-extra-debuginfo
kernel-azure-extra
kernel-devel-azure
reiserfs-kmp-azure-debuginfo
reiserfs-kmp-azure
ocfs2-kmp-azure-debuginfo
ocfs2-kmp-azure
kselftests-kmp-azure
kernel-syms-azure
kernel-azure-optional-debuginfo
kernel-azure-optional
kernel-azure-livepatch-devel
kselftests-kmp-azure-debuginfo
dtb-freescale
dtb-hisilicon
dtb-lg
dtb-marvell
dtb-mediatek
dtb-nvidia
dtb-qcom
dtb-renesas
dtb-rockchip
dtb-socionext
dtb-sprd
dtb-xilinx
gfs2-kmp-64kb
dtb-exynos
dtb-cavium
dtb-broadcom
dtb-arm
dtb-apple
dtb-apm
dtb-amlogic
dtb-amd
dtb-amazon
dtb-altera
dtb-allwinner
dlm-kmp-64kb-debuginfo
cluster-md-kmp-64kb-debuginfo
dlm-kmp-64kb
ocfs2-kmp-64kb
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-source-vanilla
kernel-source
kernel-macros
kernel-docs-html
kernel-docs
kernel-devel
reiserfs-kmp-64kb-debuginfo
reiserfs-kmp-64kb
ocfs2-kmp-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
kselftests-kmp-64kb-debuginfo
kselftests-kmp-64kb
kernel-64kb-optional-debuginfo
kernel-64kb-optional
kernel-64kb-livepatch-devel
kernel-64kb-extra-debuginfo
kernel-64kb-extra
kernel-64kb-devel-debuginfo
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-64kb
kernel-default-devel
kernel-obs-qa
kernel-obs-build-debugsource
kernel-obs-build
kernel-default-optional-debuginfo
kernel-default-optional
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-devel-debuginfo
cluster-md-kmp-64kb
kernel-default-debugsource
kernel-default-debuginfo
kernel-default
gfs2-kmp-default-debuginfo
gfs2-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default-debuginfo
cluster-md-kmp-default
kselftests-kmp-default
kernel-syms
kernel-debug-livepatch-devel
kernel-debug-devel-debuginfo
kernel-debug-devel
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug
kernel-kvmsmall-livepatch-devel
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel
kselftests-kmp-default-debuginfo
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-kvmsmall
kernel-kvmsmall-debuginfo
kernel-default-base
kernel-default-base-rebuild
linux-image-lowlatency (Ubuntu package)
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-hwe-22.04 (Ubuntu package)
linux-image-generic-hwe-22.04 (Ubuntu package)
linux-image-oem-20.04 (Ubuntu package)
linux-image-virtual-hwe-22.04 (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-lpae-hwe-22.04 (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-ibm (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-gke-5.15 (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-5.15.0-37-generic (Ubuntu package)
linux-image-5.15.0-37-generic-lpae (Ubuntu package)
linux-image-5.15.0-37-lowlatency (Ubuntu package)
linux-image-5.15.0-37-generic-64k (Ubuntu package)
linux-image-5.15.0-37-lowlatency-64k (Ubuntu package)
linux-image-5.15.0-1007-ibm (Ubuntu package)
linux-image-intel-iotg (Ubuntu package)
linux-image-5.15.0-1008-gke (Ubuntu package)
linux-image-5.15.0-1008-intel-iotg (Ubuntu package)
linux-image-5.15.0-1008-gcp (Ubuntu package)
linux-image-5.15.0-1009-oracle (Ubuntu package)
linux-image-5.15.0-1010-kvm (Ubuntu package)
linux-image-5.15.0-1010-azure (Ubuntu package)
linux-image-5.15.0-1011-raspi-nolpae (Ubuntu package)
linux-image-5.15.0-1011-raspi (Ubuntu package)
linux-image-5.15.0-1011-aws (Ubuntu package)

Install updates from vendor's website.

Linux kernel - update to 5.18 rc1
kernel-livepatch-5_14_21-150400_24_11-default - update to 1-150400.9.5.3
kernel-livepatch-5_14_21-150400_24_11-default-debuginfo - update to 1-150400.9.5.3
kernel-livepatch-SLE15-SP4_Update_1-debugsource - update to 1-150400.9.5.3
kernel-source-azure - update to 5.14.21-150400.14.7.1
cluster-md-kmp-azure - update to 5.14.21-150400.14.7.1
cluster-md-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
dlm-kmp-azure - update to 5.14.21-150400.14.7.1
dlm-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
gfs2-kmp-azure - update to 5.14.21-150400.14.7.1
gfs2-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
kernel-azure - update to 5.14.21-150400.14.7.1
kernel-azure-debuginfo - update to 5.14.21-150400.14.7.1
kernel-azure-debugsource - update to 5.14.21-150400.14.7.1
kernel-azure-devel - update to 5.14.21-150400.14.7.1
kernel-azure-devel-debuginfo - update to 5.14.21-150400.14.7.1
kernel-azure-extra-debuginfo - update to 5.14.21-150400.14.7.1
kernel-azure-extra - update to 5.14.21-150400.14.7.1
kernel-devel-azure - update to 5.14.21-150400.14.7.1
reiserfs-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
reiserfs-kmp-azure - update to 5.14.21-150400.14.7.1
ocfs2-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
ocfs2-kmp-azure - update to 5.14.21-150400.14.7.1
kselftests-kmp-azure - update to 5.14.21-150400.14.7.1
kernel-syms-azure - update to 5.14.21-150400.14.7.1
kernel-azure-optional-debuginfo - update to 5.14.21-150400.14.7.1
kernel-azure-optional - update to 5.14.21-150400.14.7.1
kernel-azure-livepatch-devel - update to 5.14.21-150400.14.7.1
kselftests-kmp-azure-debuginfo - update to 5.14.21-150400.14.7.1
dtb-freescale - update to 5.14.21-150400.24.11.1
dtb-hisilicon - update to 5.14.21-150400.24.11.1
dtb-lg - update to 5.14.21-150400.24.11.1
dtb-marvell - update to 5.14.21-150400.24.11.1
dtb-mediatek - update to 5.14.21-150400.24.11.1
dtb-nvidia - update to 5.14.21-150400.24.11.1
dtb-qcom - update to 5.14.21-150400.24.11.1
dtb-renesas - update to 5.14.21-150400.24.11.1
dtb-rockchip - update to 5.14.21-150400.24.11.1
dtb-socionext - update to 5.14.21-150400.24.11.1
dtb-sprd - update to 5.14.21-150400.24.11.1
dtb-xilinx - update to 5.14.21-150400.24.11.1
gfs2-kmp-64kb - update to 5.14.21-150400.24.11.1
dtb-exynos - update to 5.14.21-150400.24.11.1
dtb-cavium - update to 5.14.21-150400.24.11.1
dtb-broadcom - update to 5.14.21-150400.24.11.1
dtb-arm - update to 5.14.21-150400.24.11.1
dtb-apple - update to 5.14.21-150400.24.11.1
dtb-apm - update to 5.14.21-150400.24.11.1
dtb-amlogic - update to 5.14.21-150400.24.11.1
dtb-amd - update to 5.14.21-150400.24.11.1
dtb-amazon - update to 5.14.21-150400.24.11.1
dtb-altera - update to 5.14.21-150400.24.11.1
dtb-allwinner - update to 5.14.21-150400.24.11.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
dlm-kmp-64kb - update to 5.14.21-150400.24.11.1
ocfs2-kmp-64kb - update to 5.14.21-150400.24.11.1
kernel-zfcpdump-debugsource - update to 5.14.21-150400.24.11.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150400.24.11.1
kernel-zfcpdump - update to 5.14.21-150400.24.11.1
kernel-source-vanilla - update to 5.14.21-150400.24.11.1
kernel-source - update to 5.14.21-150400.24.11.1
kernel-macros - update to 5.14.21-150400.24.11.1
kernel-docs-html - update to 5.14.21-150400.24.11.1
kernel-docs - update to 5.14.21-150400.24.11.1
kernel-devel - update to 5.14.21-150400.24.11.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
reiserfs-kmp-64kb - update to 5.14.21-150400.24.11.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150400.24.11.1
kselftests-kmp-64kb - update to 5.14.21-150400.24.11.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150400.24.11.1
kernel-64kb-optional - update to 5.14.21-150400.24.11.1
kernel-64kb-livepatch-devel - update to 5.14.21-150400.24.11.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150400.24.11.1
kernel-64kb-extra - update to 5.14.21-150400.24.11.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150400.24.11.1
kernel-64kb-devel - update to 5.14.21-150400.24.11.1
kernel-64kb-debugsource - update to 5.14.21-150400.24.11.1
kernel-64kb-debuginfo - update to 5.14.21-150400.24.11.1
kernel-64kb - update to 5.14.21-150400.24.11.1
kernel-default-devel - update to 5.14.21-150400.24.11.1
kernel-obs-qa - update to 5.14.21-150400.24.11.1
kernel-obs-build-debugsource - update to 5.14.21-150400.24.11.1
kernel-obs-build - update to 5.14.21-150400.24.11.1
kernel-default-optional-debuginfo - update to 5.14.21-150400.24.11.1
kernel-default-optional - update to 5.14.21-150400.24.11.1
kernel-default-livepatch-devel - update to 5.14.21-150400.24.11.1
kernel-default-livepatch - update to 5.14.21-150400.24.11.1
kernel-default-extra-debuginfo - update to 5.14.21-150400.24.11.1
kernel-default-extra - update to 5.14.21-150400.24.11.1
kernel-default-devel-debuginfo - update to 5.14.21-150400.24.11.1
cluster-md-kmp-64kb - update to 5.14.21-150400.24.11.1
kernel-default-debugsource - update to 5.14.21-150400.24.11.1
kernel-default-debuginfo - update to 5.14.21-150400.24.11.1
kernel-default - update to 5.14.21-150400.24.11.1
gfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
gfs2-kmp-default - update to 5.14.21-150400.24.11.1
dlm-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
dlm-kmp-default - update to 5.14.21-150400.24.11.1
cluster-md-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
cluster-md-kmp-default - update to 5.14.21-150400.24.11.1
kselftests-kmp-default - update to 5.14.21-150400.24.11.1
kernel-syms - update to 5.14.21-150400.24.11.1
kernel-debug-livepatch-devel - update to 5.14.21-150400.24.11.1
kernel-debug-devel-debuginfo - update to 5.14.21-150400.24.11.1
kernel-debug-devel - update to 5.14.21-150400.24.11.1
kernel-debug-debugsource - update to 5.14.21-150400.24.11.1
kernel-debug-debuginfo - update to 5.14.21-150400.24.11.1
kernel-debug - update to 5.14.21-150400.24.11.1
kernel-kvmsmall-livepatch-devel - update to 5.14.21-150400.24.11.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150400.24.11.1
kernel-kvmsmall-debugsource - update to 5.14.21-150400.24.11.1
kernel-kvmsmall-devel - update to 5.14.21-150400.24.11.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
ocfs2-kmp-default - update to 5.14.21-150400.24.11.1
ocfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
reiserfs-kmp-default - update to 5.14.21-150400.24.11.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150400.24.11.1
kernel-kvmsmall - update to 5.14.21-150400.24.11.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150400.24.11.1
kernel-default-base - update to 5.14.21-150400.24.11.1.150400.24.3.6
kernel-default-base-rebuild - update to 5.14.21-150400.24.11.1.150400.24.3.6
linux-image-lowlatency (Ubuntu package) - update to 5.15.0.37.37
linux-image-lowlatency-64k-hwe-22.04 (Ubuntu package) - update to 5.15.0.37.37
linux-image-lowlatency-64k (Ubuntu package) - update to 5.15.0.37.37
linux-image-lowlatency-hwe-22.04 (Ubuntu package) - update to 5.15.0.37.37
linux-image-5.15.0-37-generic (Ubuntu package) - update to 5.15.0-37.39
linux-image-generic-hwe-22.04 (Ubuntu package) - update to 5.15.0.37.39
linux-image-5.15.0-37-generic-lpae (Ubuntu package) - update to 5.15.0-37.39
linux-image-oem-20.04 (Ubuntu package) - update to 5.15.0.37.39
linux-image-virtual-hwe-22.04 (Ubuntu package) - update to 5.15.0.37.39
linux-image-5.15.0-37-lowlatency (Ubuntu package) - update to 5.15.0-37.39
linux-image-5.15.0-37-generic-64k (Ubuntu package) - update to 5.15.0-37.39
linux-image-generic (Ubuntu package) - update to 5.15.0.37.39
linux-image-generic-lpae-hwe-22.04 (Ubuntu package) - update to 5.15.0.37.39
linux-image-generic-64k (Ubuntu package) - update to 5.15.0.37.39
linux-image-generic-lpae (Ubuntu package) - update to 5.15.0.37.39
linux-image-5.15.0-37-lowlatency-64k (Ubuntu package) - update to 5.15.0-37.39
linux-image-virtual (Ubuntu package) - update to 5.15.0.37.39
linux-image-ibm (Ubuntu package) - update to 5.15.0.1007.7
linux-image-5.15.0-1007-ibm (Ubuntu package) - update to 5.15.0-1007.8
linux-image-gcp (Ubuntu package) - update to 5.15.0.1008.8
linux-image-intel-iotg (Ubuntu package) - update to 5.15.0.1008.9
linux-image-5.15.0-1008-gke (Ubuntu package) - update to 5.15.0-1008.10
linux-image-5.15.0-1008-intel-iotg (Ubuntu package) - update to 5.15.0-1008.11
linux-image-gke-5.15 (Ubuntu package) - update to 5.15.0.1008.12
linux-image-gke (Ubuntu package) - update to 5.15.0.1008.12
linux-image-5.15.0-1008-gcp (Ubuntu package) - update to 5.15.0-1008.12
linux-image-oracle (Ubuntu package) - update to 5.15.0.1009.8
linux-image-5.15.0-1009-oracle (Ubuntu package) - update to 5.15.0-1009.12
linux-image-kvm (Ubuntu package) - update to 5.15.0.1010.9
linux-image-azure (Ubuntu package) - update to 5.15.0.1010.10
linux-image-5.15.0-1010-kvm (Ubuntu package) - update to 5.15.0-1010.11
linux-image-5.15.0-1010-azure (Ubuntu package) - update to 5.15.0-1010.12
linux-image-raspi (Ubuntu package) - update to 5.15.0.1011.10
linux-image-raspi-nolpae (Ubuntu package) - update to 5.15.0.1011.10
linux-image-aws (Ubuntu package) - update to 5.15.0.1011.12
linux-image-5.15.0-1011-raspi-nolpae (Ubuntu package) - update to 5.15.0-1011.13
linux-image-5.15.0-1011-raspi (Ubuntu package) - update to 5.15.0-1011.13
linux-image-5.15.0-1011-aws (Ubuntu package) - update to 5.15.0-1011.14

• https://ubuntu.com/security/notices/USN-5469-1
• https://bugzilla.redhat.com/show_bug.cgi?id=2083992

• Ubuntu update for linux
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel