Bug 2347795 (CVE-2022-49275)

Summary:	CVE-2022-49275 kernel: can: m_can: m_can_tx_handler(): fix use after free of skb
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
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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 03:07:00 UTC

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

can: m_can: m_can_tx_handler(): fix use after free of skb

can_put_echo_skb() will clone skb then free the skb. Move the
can_put_echo_skb() for the m_can version 3.0.x directly before the
start of the xmit in hardware, similar to the 3.1.x branch.

Comment 1 Avinash Hanwate 2025-02-26 19:36:20 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022630-CVE-2022-49275-9e36@gregkh/T