Bug 2348280 (CVE-2022-49644)

Summary:	CVE-2022-49644 kernel: drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()
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:	dfreiber, drow, jburrell, vkumar
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2025-02-26 03:23:55 UTC

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

drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()

If drm_connector_init fails, intel_connector_free will be called to take
care of proper free. So it is necessary to drop the refcount of port
before intel_connector_free.

(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)

Comment 1 Avinash Hanwate 2025-02-26 21:54:04 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022619-CVE-2022-49644-e3b0@gregkh/T