Bug 2348304 (CVE-2022-49524)

Summary:	CVE-2022-49524 kernel: media: pci: cx23885: Fix the error handling in cx23885_initdev()
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 03:24:48 UTC

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

media: pci: cx23885: Fix the error handling in cx23885_initdev()

When the driver fails to call the dma_set_mask(), the driver will get
the following splat:

[   55.853884] BUG: KASAN: use-after-free in __process_removed_driver+0x3c/0x240
[   55.854486] Read of size 8 at addr ffff88810de60408 by task modprobe/590
[   55.856822] Call Trace:
[   55.860327]  __process_removed_driver+0x3c/0x240
[   55.861347]  bus_for_each_dev+0x102/0x160
[   55.861681]  i2c_del_driver+0x2f/0x50

This is because the driver has initialized the i2c related resources
in cx23885_dev_setup() but not released them in error handling, fix this
bug by modifying the error path that jumps after failing to call the
dma_set_mask().

Comment 1 Avinash Hanwate 2025-02-26 13:47:01 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022611-CVE-2022-49524-74f0@gregkh/T

Comment 2 Avinash Hanwate 2025-02-26 18:13:11 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022611-CVE-2022-49524-74f0@gregkh/T