GLSA 202107-15: blktrace: Buffer overflow

http://security.gentoo.org/

Severity:	normal
Title:	blktrace: Buffer overflow
Date:	07/08/2021
Bugs:	#655146
ID:	202107-15

Synopsis

A buffer overflow in blktrace might allow arbitrary code execution.

Background

blktrace shows detailed information about what is happening on a block device IO queue.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-block/blktrace	< 1.2.0_p20210419122502	>= 1.2.0_p20210419122502	All supported architectures

Description

A crafted file could cause a buffer overflow in the ‘dev_map_read’ function because the device and devno arrays are too small.

Impact

A remote attacker could entice a user to open a specially crafted file using blktrace, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All blktrace users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose
      ">=sys-block/blktrace-1.2.0_p20210419122502"

References

CVE-2018-10689

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202107-15.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.