VYPR
Unrated severityNVD Advisory· Published Dec 8, 2025· Updated Apr 15, 2026

CVE-2023-53746

CVE-2023-53746

Description

In the Linux kernel, the following vulnerability has been resolved:

s390/vfio-ap: fix memory leak in vfio_ap device driver

The device release callback function invoked to release the matrix device uses the dev_get_drvdata(device *dev) function to retrieve the pointer to the vfio_matrix_dev object in order to free its storage. The problem is, this object is not stored as drvdata with the device; since the kfree function will accept a NULL pointer, the memory for the vfio_matrix_dev object is never freed.

Since the device being released is contained within the vfio_matrix_dev object, the container_of macro will be used to retrieve its pointer.

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Affected products

84

Patches

Vulnerability mechanics

References

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