SB2016111613 - Use-after-free in Linux kernel events
Published: November 16, 2016
Security Bulletin ID
SB2016111613
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2015-8963)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local non-authenticated attacker to execute arbitrary code.
The vulnerability exists due to a use-after-free error within the DEFINE_PER_CPU(), perf_swevent_add(), swevent_hlist_get_cpu(), perf_event_init_cpu() and perf_event_exit_cpu_context() functions in kernel/events/core.c. A local non-authenticated attacker can execute arbitrary code.
Remediation
Install update from vendor's website.