SB2017111516 - Denial of service in Linux Kernel
Published: November 15, 2017
Security Bulletin ID
SB2017111516
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2017-18216)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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]
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to the affected software does not use the subsystem.su_mutex component while accessing an item->ci_parent. A local attacker can trigger NULL pointer dereference in in the fs/ocfs2/cluster/nodemanager.c source code file cause the service to crash.
Remediation
Install update from vendor's website.