PT-2025-49445 · Linux+4 · Linux Kernel+4
Published
2025-10-28
·
Updated
2026-03-24
·
CVE-2025-40316
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel’s drm/mediatek subsystem that could lead to a use-after-free condition during device unbinding. A recent fix for device reference leaks during bind operations did not fully address the issue, leaving a reference imbalance on component bind failures and unbind. This imbalance could result in a use-after-free scenario. The issue stems from incorrectly dropping references after retrieving driver data, effectively reverting a previous partial fix. Holding a reference to a device does not prevent its driver data from being released, making the reference unnecessary.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu
Mediatek