Resource exhaustion in Linux kernel - CVE-2019-15118
Published: October 23, 2019
Vulnerability identifier: #VU22212
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-2019-15118
CWE-ID: CWE-400
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 incorrect handling of recursion within the check_input_term() function in sound/usb/mixer.c. A local user can run a specially crafted application to trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
Linux kernel
Slackware Linux
linux-4.4.199/kernel-generic
linux-4.4.199/kernel-huge
linux-4.4.199/kernel-modules
linux-4.4.199/kernel-headers
Slackware Linux
linux-4.4.199/kernel-generic
linux-4.4.199/kernel-huge
linux-4.4.199/kernel-modules
linux-4.4.199/kernel-headers
How to mitigate CVE-2019-15118
Install update from vendor's website.
Linux kernel - update to 5.2.10
linux-4.4.199/kernel-generic - update to 4.4.199
linux-4.4.199/kernel-huge - update to 4.4.199
linux-4.4.199/kernel-modules - update to 4.4.199
linux-4.4.199/kernel-headers - update to 4.4.199_smp
linux-4.4.199/kernel-generic - update to 4.4.199
linux-4.4.199/kernel-huge - update to 4.4.199
linux-4.4.199/kernel-modules - update to 4.4.199
linux-4.4.199/kernel-headers - update to 4.4.199_smp