Bug 2355496 (CVE-2023-52985)

Summary:	CVE-2023-52985 kernel: arm64: dts: imx8mm-verdin: Do not power down eth-phy
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, rhel-process-autobot, vkumar, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-03-27 17:04:16 UTC

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

arm64: dts: imx8mm-verdin: Do not power down eth-phy

Currently if suspending using either freeze or memory state, the fec
driver tries to power down the phy which leads to crash of the kernel
and non-responsible kernel with the following call trace:

[   24.839889 ] Call trace:
[   24.839892 ]  phy_error+0x18/0x60
[   24.839898 ]  kszphy_handle_interrupt+0x6c/0x80
[   24.839903 ]  phy_interrupt+0x20/0x2c
[   24.839909 ]  irq_thread_fn+0x30/0xa0
[   24.839919 ]  irq_thread+0x178/0x2c0
[   24.839925 ]  kthread+0x154/0x160
[   24.839932 ]  ret_from_fork+0x10/0x20

Since there is currently no functionality in the phy subsystem to power
down phys let's just disable the feature of powering-down the ethernet
phy.

Comment 1 Robb Gatica 2025-03-27 21:29:20 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025032707-CVE-2023-52985-3f52@gregkh/T