CVE-2026-53279
Received Received - Intake
Kernel LVDS Init Failure in Linux Kernel

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/gma500/oaktrail_lvds: fix hang on init failure The LVDS init code looks up an I2C adapter using i2c_get_adapter() and tries to read the EDID before falling back to allocating and registering its own adapter. The error handling does not separate these cases so on a late init failure it will try to deregister and free also an adapter that had previously been registered. Since i2c_get_adapter() takes another reference to the adapter, deregistration hangs indefinitely while waiting for the reference to be released. Fix this by only destroying adapters allocated during LVDS init on errors.
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-27
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2026-53279
EUVD
EUVD-2026-39884
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's drm/gma500/oaktrail_lvds component. The LVDS initialization code attempts to look up an I2C adapter and read the EDID. If this fails late in the initialization, the error handling incorrectly tries to deregister and free an adapter that was previously registered. Because the i2c_get_adapter() function increases the reference count on the adapter, attempting to deregister it while references still exist causes the deregistration process to hang indefinitely.

The fix involves changing the error handling so that only adapters allocated during the LVDS initialization are destroyed on errors, preventing the hang.

Impact Analysis

This vulnerability can cause the system to hang indefinitely during the LVDS initialization process if an error occurs late in the initialization. This can lead to system instability or unresponsiveness related to display initialization, potentially affecting device usability or requiring a reboot to recover.

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