Bug 2297575 (CVE-2024-40991)

Summary:	CVE-2024-40991 kernel: dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_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:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.9.7, kernel 6.10-rc5	Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in the Linux kernel's DMA engine component due to an issue in the `of_k3_udma_glue_parse_chn_by_id()` helper function. It incorrectly invoked the `of_node_put()` function on the `udmax_np` device-node without first incrementing its reference count, which could lead to potential issues in resource management.	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 2024-07-12 13:47:46 UTC

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

dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

The of_k3_udma_glue_parse_chn_by_id() helper function erroneously
invokes "of_node_put()" on the "udmax_np" device-node passed to it,
without having incremented its reference count at any point. Fix it.