Bug 2541025 (CVE-2026-97541)

Summary:	CVE-2026-97541 kernel: wifi: ath9k_htc: don't store usb_device_id
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 ath9k_htc wireless driver. The driver stores a pointer to a USB device identifier that can be freed after the initial device probe when dynamic device identifiers are used. A local attacker could exploit this use-after-free vulnerability when the driver later accesses the deallocated memory during firmware loading or hardware initialization. This issue can lead to a Denial of Service (DoS) through a system crash or potentially arbitrary code execution.	Story Points:	---
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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 2026-09-25 10:44:19 UTC

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

wifi: ath9k_htc: don't store usb_device_id

usb_device_id is not guaranteed to live longer than probe due to presence
of dynamic ID. All information apart from driver_data can be easily
retrieved from usb_device, so just store driver_data.

Comment 1 gkamathe 2026-09-28 21:41:27 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97541.mbox