Bug 2526604

Summary:	CVE-2026-40469 gawk: gawk: Denial of Service due to integer overflow [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Jon Weiser <jweiser>
Component:	gawk	Assignee:	Jakub Martisko <jamartis>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	aschorr, jamartis, ovasik
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["10f811a9-4af9-40c6-80ed-099c3b493d73"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2499656

Description Jon Weiser 2026-09-01 00:33:26 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.