Bug 2405137 (CVE-2025-40011) - CVE-2025-40011 kernel: drm/gma500: Fix null dereference in hdmi teardown
Summary: CVE-2025-40011 kernel: drm/gma500: Fix null dereference in hdmi teardown
Keywords:
Status: NEW
Alias: CVE-2025-40011
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: 2025-10-20 17:24 UTC by OSIDB Bzimport
Modified: 2025-10-20 17:39 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-10-20 17:24:04 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/gma500: Fix null dereference in hdmi teardown

pci_set_drvdata sets the value of pdev->driver_data to NULL,
after which the driver_data obtained from the same dev is
dereferenced in oaktrail_hdmi_i2c_exit, and the i2c_dev is
extracted from it. To prevent this, swap these calls.

Found by Linux Verification Center (linuxtesting.org) with Svacer.
Comment 1 Jon Moroney 2025-10-20 17:36:57 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102003-CVE-2025-40011-f8f9@gregkh/T
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