NULL pointer dereference in Linux kernel - CVE-2019-19965

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Main Vulnerability Database Vulnerabilities #VU90670

NULL pointer dereference in Linux kernel - CVE-2019-19965

Published: December 25, 2019 / Updated: March 31, 2022


Vulnerability identifier: #VU90670
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19965
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the sas_get_port_device() function in drivers/scsi/libsas/sas_discover.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Anolis OS
Slackware Linux
linux-4.4.217/kernel-modules
linux-4.4.217/kernel-huge
linux-4.4.217/kernel-generic
linux-4.4.217/kernel-headers
python3-perf
bpftool
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-modules-extra
kernel-headers
kernel
kernel-core
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-debug-modules
kernel-debug-modules-extra
kernel-devel
kernel-modules
python-perf

How to mitigate CVE-2019-19965

Install update from vendor's website.

linux-4.4.217/kernel-modules - update to 4.4.217
linux-4.4.217/kernel-huge - update to 4.4.217
linux-4.4.217/kernel-generic - update to 4.4.217
linux-4.4.217/kernel-headers - update to 4.4.217_smp
python3-perf - update to 4.19.91-23.4
bpftool - addressed in versions 4.19.91-23.4, 4.19.91-26
perf - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools-libs-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools-libs - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-modules-extra - update to 4.19.91-23.4
kernel-headers - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-core - update to 4.19.91-23.4
kernel-debug - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-debug-core - update to 4.19.91-23.4
kernel-debug-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-debug-modules - update to 4.19.91-23.4
kernel-debug-modules-extra - update to 4.19.91-23.4
kernel-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-modules - update to 4.19.91-23.4
python-perf - update to 4.19.91-26

External References

Related Security Bulletins