NULL pointer dereference in Linux kernel - CVE-2019-11810

Vulnerability identifier: #VU19995

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-2019-11810

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 when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Opensuse

kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
kernel-alt (Red Hat package)
Data Computing Appliance (DCA)
Red Hat Virtualization Host

Install update from vendor's website.

Linux kernel - update to 5.0.7
kernel (Red Hat package) - addressed in versions 2.6.32-754.22.1.el6, 3.10.0-862.46.1.el7, 3.10.0-957.35.1.el7, 3.10.0-1062.el7
Data Computing Appliance (DCA) - update to 3.5.5.0
kernel-rt (Red Hat package) - update to 3.10.0-1062.rt56.1022.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.14.1.el7a

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.7
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bcf3b67d16a4c8ffae0aa79de5853435e683945c
• https://github.com/torvalds/linux/commit/bcf3b67d16a4c8ffae0aa79de5853435e683945c

• Red Hat update for kernel-rt
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• OpenSUSE Linux update for the Linux Kernel
• OpenSUSE Linux update for the Linux Kernel
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 7 update for kernel-alt