Bug 2540487 (CVE-2026-97475) - CVE-2026-97475 kernel: thermal/drivers/tegra/soctherma: Switch to devm cooling device registration
Summary: CVE-2026-97475 kernel: thermal/drivers/tegra/soctherma: Switch to devm coolin...
Keywords:
Status: NEW
Alias: CVE-2026-97475
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 17:00 UTC by OSIDB Bzimport
Modified: 2026-09-29 18:40 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-09-24 17:00:01 UTC
In the Linux kernel, the following vulnerability has been resolved:

thermal/drivers/tegra/soctherma: Switch to devm cooling device registration

Use devm_thermal_of_cooling_device_register() to simplify resource
management and avoid manual cleanup in error paths.

As a side effect this change has the benefit of solving an existing
issue. Before, the function tegra_soctherm_remove() only called
debugfs_remove_recursive() and never called thermal_cooling_device_unregister()
for any of the cooling devices registered here.

After the driver removal, the thermal framework's cdev list would
still hold references to thermal_cooling_device objects whose devdata
pointer (ts) pointed to memory already freed by the platform device's
devm cleanup.

With this change, the cooling device is unregistered when the driver
is removed, thus fixing the issue above.


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