SB2018011818 - Denial of service in Linux Kernel
Published: January 18, 2018
Security Bulletin ID
SB2018011818
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2018-8087)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the hwsim_new_radio_nl function due to memory leak. A local attacker can trigger memory corruption and cause the service the crash.
2) Double free error (CVE-ID: CVE-2017-18174)
CWE-ID: CWE-415 - Double Free
CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the amd_gpio_remove function due to double free when calling the pinctrl_unregister function. A local attacker can trigger memory corruption and cause the service to crash.
Remediation
Install update from vendor's website.