Bug 2467134 (CVE-2026-43162)

Summary:	CVE-2026-43162 kernel: media: tegra-video: Fix memory leak in __tegra_channel_try_format()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's tegra-video driver. This vulnerability, a memory leak, occurs because certain error paths in the `__tegra_channel_try_format()` function fail to properly deallocate a state object. Over time, this can lead to increased memory consumption, potentially causing system instability or a Denial of Service (DoS).	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-06 13:06:10 UTC

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

media: tegra-video: Fix memory leak in __tegra_channel_try_format()

The state object allocated by __v4l2_subdev_state_alloc() must be freed
with __v4l2_subdev_state_free() when it is no longer needed.

In __tegra_channel_try_format(), two error paths return directly after
v4l2_subdev_call() fails, without freeing the allocated 'sd_state'
object. This violates the requirement and causes a memory leak.

Fix this by introducing a cleanup label and using goto statements in the
error paths to ensure that __v4l2_subdev_state_free() is always called
before the function returns.

Comment 1 Keith Grant 2026-05-06 19:25:13 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050632-CVE-2026-43162-7fcc@gregkh/T