PT-2025-37676 · Linux+3 · Linux Kernel+3
Published
2023-09-14
·
Updated
2025-11-19
·
CVE-2023-53235
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free (UAF) vulnerability exists in the Linux kernel's
drm/tests module. Specifically, when using the drm kunit helper alloc drm device() function, the driver may be dereferenced after it has been freed by kunit-managed resources. This occurs because the device-managed resource cleanup calls drm dev put(), which then dereferences the already freed driver, leading to a UAF condition. The sequence involves allocating a struct device and a DRM driver as kunit-managed resources, and a DRM device as a device-managed resource. Upon cleanup, the kunit resource cleanup frees the DRM driver, and the device-managed cleanup attempts to access the freed driver.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
Astra Linux
Linux Kernel
Red Hat
Suse