Bug 2347771 (CVE-2022-49422)

Summary:	CVE-2022-49422 kernel: dmaengine: idxd: Fix the error handling path in idxd_cdev_register()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
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 03:06:12 UTC

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

dmaengine: idxd: Fix the error handling path in idxd_cdev_register()

If a call to alloc_chrdev_region() fails, the already allocated resources
are leaking.

Add the needed error handling path to fix the leak.

Comment 1 Avinash Hanwate 2025-02-26 11:31:20 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022654-CVE-2022-49422-b047@gregkh/T

Comment 4 Avinash Hanwate 2025-02-26 15:59:21 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022654-CVE-2022-49422-b047@gregkh/T