Bug 2532053 (CVE-2026-81006)

Summary:	CVE-2026-81006 kernel: ipmi: Remove all sysfs files on registration failure
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's Intelligent Platform Management Interface (IPMI) component. During the registration of an IPMI system management interface, an error in the cleanup process can leave a system file (sysfs attribute) registered even after its associated memory has been released. This incomplete cleanup could lead to a memory corruption vulnerability, potentially causing system instability.	Story Points:	---
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Last Closed:		Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-11 20:19:43 UTC

In the Linux kernel, the following vulnerability has been resolved:

ipmi: Remove all sysfs files on registration failure

ipmi_add_smi() creates the nr_users and nr_msgs files before trying to
create the maintenance_mode file. If that last creation fails, the error
path removes only nr_users before dropping the final reference to the
interface.

Remove nr_msgs as well so no sysfs attribute embedded in the freed
interface remains registered.

Comment 1 Mauro Matteo Cascella 2026-09-14 17:12:23 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81006.mbox