Bug 2309798 (CVE-2024-44967) - CVE-2024-44967 kernel: drm/mgag200: Bind I2C lifetime to DRM device
Summary: CVE-2024-44967 kernel: drm/mgag200: Bind I2C lifetime to DRM device
Keywords:
Status: NEW
Alias: CVE-2024-44967
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2309822
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-09-04 19:21 UTC by OSIDB Bzimport
Modified: 2024-09-04 21:10 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2024-09-04 19:21:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/mgag200: Bind I2C lifetime to DRM device

Managed cleanup with devm_add_action_or_reset() will release the I2C
adapter when the underlying Linux device goes away. But the connector
still refers to it, so this cleanup leaves behind a stale pointer
in struct drm_connector.ddc.

Bind the lifetime of the I2C adapter to the connector's lifetime by
using DRM's managed release. When the DRM device goes away (after
the Linux device) DRM will first clean up the connector and then
clean up the I2C adapter.
Comment 1 Robb Gatica 2024-09-04 20:10:01 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024090453-CVE-2024-44967-dd14@gregkh/T
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