Bug 1962213 (CVE-2020-23856)

Summary:	CVE-2020-23856 cflow: use-after-free in call() in src/parser.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:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	terje.rosten
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:	2021-05-19 14:33:59 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:	1962214
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2021-05-19 14:12:20 UTC

Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee.

Reference:
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html

Comment 1 Guilherme de Almeida Suckevicz 2021-05-19 14:12:38 UTC

Created cflow tracking bugs for this issue:

Affects: fedora-all [bug 1962214]

Comment 2 Product Security DevOps Team 2021-05-19 14:33:59 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.