SB2018062901 - Amazon Linux AMI update for kernel

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Main Vulnerability Database SB2018062901

SB2018062901 - Amazon Linux AMI update for kernel

Published: June 29, 2018

Security Bulletin ID SB2018062901
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2018-12232)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 vulnerability exists in the net/socket.c source code file due to the fchownat() function does not increment the reference count of a socket file descriptor, which could trigger a race condition between the sock_close() and sockfs_setattr() functions. A local attacker can submit specially crafted input, trigger a NULL pointer dereference condition and cause the system to crash..


Remediation

Install update from vendor's website.

References