Bug 2536705 (CVE-2026-93065)

Summary:	CVE-2026-93065 kernel: wifi: iwlwifi: fix counter type in iwl_fwrt_dump_error_logs
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 iwlwifi driver of the Linux kernel. An integer overflow vulnerability exists where a loop counter, declared as an 8-bit unsigned integer, can wrap around if the firmware advertises more than 255 program counter entries. This can lead to an infinite loop, causing a denial of service, or potentially reading past an allocated memory array, which could result in information disclosure.	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 2026-09-17 19:10:29 UTC

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

wifi: iwlwifi: fix counter type in iwl_fwrt_dump_error_logs

The loop counter 'count' was declared as u8 while num_pc is u32.
If firmware advertises more than 255 PC entries the counter wraps
back to zero and the loop never terminates potentially causing an
infinite loop or reading past the allocated pc_data array.

Change the declaration to u32 to match num_pc.

Comment 1 gkamathe 2026-09-19 21:48:41 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93065.mbox