NULL pointer dereference in Linux kernel - CVE-2021-46905

Vulnerability identifier: #VU87991

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-2021-46905

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 on disconnect regression within the hso_serial_tty_unregister() functin in drivers/net/usb/hso.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise Workstation Extension 12
SUSE Linux Enterprise Live Patching
Dell Data Protection Central
PowerProtect DP Series Appliance (IDPA)
Storage Copy Data Management
EMC Cloud Tiering Appliance
IBM Integrated Analytics System
kgraft-patch-4_12_14-122_212-default
kernel-rt_debug-devel-debuginfo
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-debugsource
cluster-md-kmp-rt
gfs2-kmp-rt
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
dlm-kmp-rt
ocfs2-kmp-rt
kernel-rt_debug-debugsource
kernel-syms-rt
kernel-rt-devel-debuginfo
kernel-rt-base-debuginfo
kernel-rt-base
gfs2-kmp-rt-debuginfo
kernel-rt_debug-devel
kernel-devel-rt
kernel-source-rt
kernel-rt_debug
kernel-rt
kernel-azure
kernel-devel-azure
kernel-azure-base
kernel-azure-devel
kernel-azure-debugsource
kernel-azure-base-debuginfo
kernel-source-azure
kernel-azure-debuginfo
kernel-syms-azure
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
ocfs2-kmp-default
kernel-syms
kernel-default-base
kernel-default-devel
dlm-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
gfs2-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-extra
cluster-md-kmp-default
kernel-default
kernel-source
kernel-macros
kernel-devel
kernel-default-devel-debuginfo
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-man
kernel-default-extra-debuginfo
kernel-default-debuginfo
kernel-default-base-debuginfo

Install updates from vendor's website.

Linux kernel - addressed in versions 4.4.268, 4.9.268, 4.14.232, 4.19.189, 5.4.115, 5.10.33, 5.11.17, 5.12.1, 5.13
IBM Integrated Analytics System - update to 1.0.31.0
kgraft-patch-4_12_14-122_212-default - update to 1-8.11.1
Storage Copy Data Management - update to 2.2.24.1
kernel-rt_debug-devel-debuginfo - update to 4.12.14-10.182.1
ocfs2-kmp-rt-debuginfo - update to 4.12.14-10.182.1
dlm-kmp-rt-debuginfo - update to 4.12.14-10.182.1
kernel-rt-debuginfo - update to 4.12.14-10.182.1
kernel-rt-debugsource - update to 4.12.14-10.182.1
cluster-md-kmp-rt - update to 4.12.14-10.182.1
gfs2-kmp-rt - update to 4.12.14-10.182.1
kernel-rt-devel - update to 4.12.14-10.182.1
cluster-md-kmp-rt-debuginfo - update to 4.12.14-10.182.1
kernel-rt_debug-debuginfo - update to 4.12.14-10.182.1
dlm-kmp-rt - update to 4.12.14-10.182.1
ocfs2-kmp-rt - update to 4.12.14-10.182.1
kernel-rt_debug-debugsource - update to 4.12.14-10.182.1
kernel-syms-rt - update to 4.12.14-10.182.1
kernel-rt-devel-debuginfo - update to 4.12.14-10.182.1
kernel-rt-base-debuginfo - update to 4.12.14-10.182.1
kernel-rt-base - update to 4.12.14-10.182.1
gfs2-kmp-rt-debuginfo - update to 4.12.14-10.182.1
kernel-rt_debug-devel - update to 4.12.14-10.182.1
kernel-devel-rt - update to 4.12.14-10.182.1
kernel-source-rt - update to 4.12.14-10.182.1
kernel-rt_debug - update to 4.12.14-10.182.1
kernel-rt - update to 4.12.14-10.182.1
kernel-azure - update to 4.12.14-16.182.1
kernel-devel-azure - update to 4.12.14-16.182.1
kernel-azure-base - update to 4.12.14-16.182.1
kernel-azure-devel - update to 4.12.14-16.182.1
kernel-azure-debugsource - update to 4.12.14-16.182.1
kernel-azure-base-debuginfo - update to 4.12.14-16.182.1
kernel-source-azure - update to 4.12.14-16.182.1
kernel-azure-debuginfo - update to 4.12.14-16.182.1
kernel-syms-azure - update to 4.12.14-16.182.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.212.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.212.1
ocfs2-kmp-default - update to 4.12.14-122.212.1
kernel-syms - update to 4.12.14-122.212.1
kernel-default-base - update to 4.12.14-122.212.1
kernel-default-devel - update to 4.12.14-122.212.1
dlm-kmp-default - update to 4.12.14-122.212.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.212.1
kernel-default-debugsource - update to 4.12.14-122.212.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.212.1
gfs2-kmp-default - update to 4.12.14-122.212.1
kernel-default-extra - update to 4.12.14-122.212.1
cluster-md-kmp-default - update to 4.12.14-122.212.1
kernel-default - update to 4.12.14-122.212.1
kernel-source - update to 4.12.14-122.212.1
kernel-macros - update to 4.12.14-122.212.1
kernel-devel - update to 4.12.14-122.212.1
kernel-default-devel-debuginfo - update to 4.12.14-122.212.1
kernel-default-kgraft-devel - update to 4.12.14-122.212.1
kernel-default-kgraft - update to 4.12.14-122.212.1
kernel-docs - update to 4.12.14-122.212.1
kernel-obs-build - update to 4.12.14-122.212.1
kernel-obs-build-debugsource - update to 4.12.14-122.212.1
kernel-default-man - update to 4.12.14-122.212.1
kernel-default-extra-debuginfo - update to 4.12.14-122.212.1
kernel-default-debuginfo - update to 4.12.14-122.212.1
kernel-default-base-debuginfo - update to 4.12.14-122.212.1
EMC Cloud Tiering Appliance - update to 13.2.0.2.29

• https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725
• https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e
• https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273
• https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00
• https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef
• https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.232
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.189
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.268
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.268
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.33
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.17
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.1
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.115

• Denial of service in Linux kernel usb hso
• Multiple vulnerabilities in Dell Cloud Tiering Appliance
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Multiple vulnerabilities in Dell Data Protection Central
• Multiple vulnerabilities in IBM Storage Copy Data Management
• Multiple vulnerabilities in IBM Integrated Analytics System