Bug 1838806 (CVE-2020-8432)

Summary:	CVE-2020-8432 uboot-tools: double free in do_rename_gpt_parts function in cmd/gpt.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dan, dennis, jdisnard, ole.d, pbrobinson
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-05-21 21:15:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1838807, 1838808
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-05-21 20:23:06 UTC

In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute arbitrary code. NOTE: this vulnerablity was introduced when attempting to fix a memory leak identified by static analysis.

References:
https://www.mail-archive.com/u-boot@lists.denx.de/msg354060.html
https://www.mail-archive.com/u-boot@lists.denx.de/msg354114.html

Comment 1 Guilherme de Almeida Suckevicz 2020-05-21 20:23:27 UTC

Created uboot-tools tracking bugs for this issue:

Affects: epel-6 [bug 1838808]
Affects: fedora-all [bug 1838807]

Comment 2 Product Security DevOps Team 2020-05-21 21:15:22 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.