Bug 2488364

Summary:	CVE-2026-0438 linux-firmware: Arbitrary code execution in System Management Mode [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Michalis Papadopoullos <mpapadop>
Component:	linux-firmware	Assignee:	David Woodhouse <dwmw2>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	dvlasenk, dwmw2, evgsyr, jforbes, jwboyer, kernel-maint, pbrobinson
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---	Flags:	pbrobinson: needinfo? (mpapadop)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["ef50dbdc-062e-4095-bf20-94dfb87305b0"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-06-12 21:21:18 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:

Description Michalis Papadopoullos 2026-06-12 14:38:18 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.

Comment 1 Eugene Syromyatnikov 2026-06-12 20:57:09 UTC

AMD x86 CPU microcode is maintained as part of the linux-firmware package, reassigning.

Comment 2 Peter Robinson 2026-06-12 21:21:18 UTC

Another pointless zero research bug from RH security (why do people pay for this exactly). This isn't a CPU patchable firmware and hence isn't dealt with by linux kernel applyable firmware AT ALL. It has to be provided by a early boot vendor firmware.

PLEASE red hat security please do some BASIC research for your bugs, at least for your paid customers!