SB2017102501 - Denial of service in Linux kernel
Published: October 25, 2017
Security Bulletin ID
SB2017102501
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) Divide by zero (CVE-ID: CVE-2017-14106)
CWE-ID: CWE-369 - Divide By Zero
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to divide-by-zero error in the tcp_disconnect() function in net/ipv4/tcp.c. A local attacker can trigger a disconnect within a certain tcp_recvmsg code path and cause kernel panic.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.