Bug 2555195 (CVE-2026-98663)

Summary:	CVE-2026-98663 kernel: iio: imu: adis16480: fix unprotected debugfs reads
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
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 ADIS16480 Industrial I/O (IIO) driver. The driver fails to protect debug file system (debugfs) read operations against concurrent device removal. A local attacker with access to debugfs can exploit this race condition by reading firmware attributes while unbinding the device, causing a use-after-free condition. This flaw primarily results in a Denial of Service (DoS) through a kernel crash and may potentially lead to privilege escalation.	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:

Description OSIDB Bzimport 2026-10-18 16:00:13 UTC

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

iio: imu: adis16480: fix unprotected debugfs reads

The firmware_revision and firmware_date file operations are open coded
and never call debugfs_file_get(), which debugfs_create_file_unsafe()
requires. debugfs_remove_recursive() therefore does not wait for a read
in progress, and unbind frees the iio_dev underneath it.

Use debugfs_create_file() instead.

Comment 1 Mauro Matteo Cascella 2026-10-21 22:31:23 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98663.mbox