Bug 2375776 (CVE-2025-6297)

Summary:	CVE-2025-6297 dpkg: dpkg excessive disk usage
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	crizzo, dfreiber, drow, jburrell, jmitchel, jtanner, kshier, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A temporary file cleanup flaw was found in dpkg. When extracting a control member into a temporary directory, the code responsible for cleaning up the temporary directory does not sanitize the directory permissions, leaving temporary files behind. Repeated and automated execution of dpkg-deb commands on malicious .deb packages could lead to disk space exhaustion.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	2375784, 2375779, 2375781, 2375782, 2375783
Bug Blocks:

Description OSIDB Bzimport 2025-07-01 17:01:12 UTC

It was discovered that dpkg does not properly sanitize directory permissions when extracting a control member into a temporary directory, which is
documented as being a safe operation even on untrusted data, which may lead to leave temporary files behind on cleanup. Given automated and repeated execution of dpkg-deb commands on
adversarial .deb packages or with well compressible files, placed
inside a directory with permissions not allowing removal by a non-root
user, this can end up with a DoS scenario due to causing disk quota
exhaustion or disk full conditions.