In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992936 advisory.

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

    media: dvbdev: adopts refcnt to avoid UAF

    dvb_unregister_device() is known that prone to use-after-free.
    That is, the cleanup from dvb_unregister_device() releases the dvb_device     even if there are pointers stored in file->private_data still refer to it.

    This patch adds a reference counter into struct dvb_device and delays its     deallocation until no pointer refers to the object.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992540 advisory.

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

    media: dvbdev: adopts refcnt to avoid UAF

    dvb_unregister_device() is known that prone to use-after-free.
    That is, the cleanup from dvb_unregister_device() releases the dvb_device     even if there are pointers stored in file->private_data still refer to it.

    This patch adds a reference counter into struct dvb_device and delays its     deallocation until no pointer refers to the object.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992205 advisory.

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

    media: dvbdev: adopts refcnt to avoid UAF

    dvb_unregister_device() is known that prone to use-after-free.
    That is, the cleanup from dvb_unregister_device() releases the dvb_device     even if there are pointers stored in file->private_data still refer to it.

    This patch adds a reference counter into struct dvb_device and delays its     deallocation until no pointer refers to the object.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free.
    That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers     stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device     and delays its deallocation until no pointer refers to the object. (CVE-2022-50274)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the linux package has been released.

ID	Name	Product	Family	Severity
281105	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992936)	Nessus	Unity Linux Local Security Checks	high
280653	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992540)	Nessus	Unity Linux Local Security Checks	high
280551	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992205)	Nessus	Unity Linux Local Security Checks	high
264946	Linux Distros Unpatched Vulnerability : CVE-2022-50274	Nessus	Misc.	high
153035	Photon OS 4.0: Linux PHSA-2021-4.0-0095	Nessus	PhotonOS Local Security Checks	high

Detections

Analytics

CVE-2022-50274

high

Tenable Plugins

high

high

high

high

high