SB2018091001 - Multiple vulnerabilities in Linux kernel 

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Main Vulnerability Database SB2018091001

SB2018091001 - Multiple vulnerabilities in Linux kernel

Published: September 10, 2018

Security Bulletin ID SB2018091001
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2018-6555)

The vulnerability allows a local user to cause denial of service attack or escalate privileges on the system.

The vulnerability exists due to a use-after-free error in irda_setsockopt() function within net/irda/af_irda.c and drivers/staging/irda/net/af_irda.c files when processing data passed to AF_IRDA socket. A local user can trigger a use-after-free error and handle the system unresponsive or execute arbitrary code with elevated privileges.


2) Memory leak (CVE-ID: CVE-2018-6554)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the irda_bind() function in net/irda/af_irda.c and drivers/staging/irda/net/af_irda.c files in the Linux kernel before 4.17. A local user can cause a denial of service (memory consumption) by repeatedly binding an AF_IRDA socket.


Remediation

Install update from vendor's website.

References