SB2020052129 - Multiple vulnerabilities in Linux kernel

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Main Vulnerability Database SB2020052129

SB2020052129 - Multiple vulnerabilities in Linux kernel

Published: May 21, 2020

Security Bulletin ID SB2020052129
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-2020-12657)

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in "block/bfq-iosched.c" file related to "bfq_idle_slice_timer_body". A local user can execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


2) Integer overflow (CVE-ID: CVE-2020-12826)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in "exec_id" in "include/linux/sched.h". A local user can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References