Bug 2300384 (CVE-2024-41026)

Summary:	CVE-2024-41026 kernel: mmc: davinci_mmc: Prevent transmitted data size from exceeding sgm's length
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 6.9.10, kernel 6.10	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the `davinci_mmc` driver in the Linux kernel, which lacks validation for the size of transmitted data, leading to potential kernel panics if the data size exceeded the scatter-gather list (`sg_miter`) length. This issue was addressed by adding a check to limit the transmitted data to the `sgm->length`, preventing buffer overflows and enhancing system stability.	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:
Bug Depends On:	2301514
Bug Blocks:

Description OSIDB Bzimport 2024-07-29 15:21:21 UTC

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

mmc: davinci_mmc: Prevent transmitted data size from exceeding sgm's length

No check is done on the size of the data to be transmiited. This causes
a kernel panic when this size exceeds the sg_miter's length.

Limit the number of transmitted bytes to sgm->length.

Comment 1 Mauro Matteo Cascella 2024-07-30 08:39:08 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024072920-CVE-2024-41026-8de7@gregkh/T

Comment 2 Mauro Matteo Cascella 2024-07-30 08:39:28 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301514]