NULL pointer dereference in Linux kernel - CVE-2022-49046

Vulnerability identifier: #VU104619

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-2022-49046

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 i2cdev_attach_adapter() function in drivers/i2c/i2c-dev.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 High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
Anolis OS
SUSE Linux Enterprise Live Patching
Ubuntu
kgraft-patch-4_12_14-122_255-default
ocfs2-kmp-default
kernel-default-base-debuginfo
kernel-default-man
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-macros
kernel-devel
kernel-source
kernel-default
kernel-default-debugsource
kernel-default-debuginfo
kernel-default-devel
cluster-md-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-base
gfs2-kmp-default
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-devel-debuginfo
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default
linux (Ubuntu package)
linux-bluefield (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure-5.4 (Ubuntu package)
bpftool
kernel-debug-core
kernel-debug
kernel-core
kernel-debug-devel
kernel-debug-modules
kernel
kernel-tools-libs
kernel-debug-modules-extra
kernel-debug-modules-internal
kernel-headers
kernel-modules
kernel-modules-extra
kernel-modules-internal
kernel-tools
python3-perf
perf
kernel-tools-libs-devel

Install update from vendor's website.

Linux kernel - update to 5.17.4
kgraft-patch-4_12_14-122_255-default - update to 1-8.5.1
ocfs2-kmp-default - update to 4.12.14-122.255.1
kernel-default-base-debuginfo - update to 4.12.14-122.255.1
kernel-default-man - update to 4.12.14-122.255.1
kernel-default-kgraft - update to 4.12.14-122.255.1
kernel-default-kgraft-devel - update to 4.12.14-122.255.1
kernel-macros - update to 4.12.14-122.255.1
kernel-devel - update to 4.12.14-122.255.1
kernel-source - update to 4.12.14-122.255.1
kernel-default - update to 4.12.14-122.255.1
kernel-default-debugsource - update to 4.12.14-122.255.1
kernel-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-devel - update to 4.12.14-122.255.1
cluster-md-kmp-default - update to 4.12.14-122.255.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-base - update to 4.12.14-122.255.1
gfs2-kmp-default - update to 4.12.14-122.255.1
kernel-syms - update to 4.12.14-122.255.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-devel-debuginfo - update to 4.12.14-122.255.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.255.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
dlm-kmp-default - update to 4.12.14-122.255.1
linux (Ubuntu package) - addressed in versions 5.4.0.228.220, 5.4.0-228.248, 5.4.0-228.248~18.04.1, 5.4.0-1061.64, 5.4.0.1075.75, 5.4.0-1075.79, 5.4.0-1103.108, 5.4.0-1103.108~18.04.1, 5.4.0.1103.132, 5.4.0.1144.140, 5.4.0-1144.153, 5.4.0.1155.149, 5.4.0-1155.165, 5.4.0-1155.165~18.04.1, 5.4.0.1157.154, 5.4.0-1157.167, 5.4.0-1157.167~18.04.1, 5.4.0.1160.162, 5.4.0-1160.169, 5.4.0-1160.169~18.04.1, 5.4.0.1161.153, 5.4.0-1161.167
linux-bluefield (Ubuntu package) - addressed in versions 5.4.0.1116.112, 5.4.0-1116.123
linux-aws-fips (Ubuntu package) - addressed in versions 5.4.0.1131.128, 5.4.0-1131.141, 5.4.0.1157.104, 5.4.0-1157.167+fips1, 5.4.0.1160.102, 5.4.0-1160.169+fips1, 5.4.0.1161.97, 5.4.0-1161.167+fips1
linux-raspi (Ubuntu package) - addressed in versions 5.4.0-1140.153, 5.4.0-1140.153~18.04.1, 5.4.0.1140.171
linux-azure-5.4 (Ubuntu package) - update to 5.4.0-1161.167~18.04.1
bpftool - update to 5.10.134-19
kernel-debug-core - update to 5.10.134-19
kernel-debug - update to 5.10.134-19
kernel-core - update to 5.10.134-19
kernel-debug-devel - update to 5.10.134-19
kernel-debug-modules - update to 5.10.134-19
kernel - update to 5.10.134-19
kernel-tools-libs - update to 5.10.134-19
kernel-debug-modules-extra - update to 5.10.134-19
kernel-debug-modules-internal - update to 5.10.134-19
kernel-devel - update to 5.10.134-19
kernel-headers - update to 5.10.134-19
kernel-modules - update to 5.10.134-19
kernel-modules-extra - update to 5.10.134-19
kernel-modules-internal - update to 5.10.134-19
kernel-tools - update to 5.10.134-19
python3-perf - update to 5.10.134-19
perf - update to 5.10.134-19
kernel-tools-libs-devel - update to 5.10.134-19

• https://git.kernel.org/stable/c/2f345bb14ad4744950499ff222e2899209297afa
• https://git.kernel.org/stable/c/993eb48fa199b5f476df8204e652eff63dd19361
• https://git.kernel.org/stable/c/c74d77a2d07744147d734138acd6ce9dba715e5d
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.4

• NULL pointer dereference in Linux kernel i2c driver
• SUSE update for the Linux Kernel
• Anolis OS update for kernel:5.10
• Ubuntu update for linux-azure-5.4
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux
• Ubuntu update for linux-bluefield
• Ubuntu update for linux-raspi