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

media: dvb-core: Fix double free in dvb_register_device()

In function dvb_register_device() -> dvb_register_media_device() ->
dvb_create_media_entity(), dvb->entity is allocated and initialized. If
the initialization fails, it frees the dvb->entity, and return an error
code. The caller takes the error code and handles the error by calling
dvb_media_device_free(), which unregisters the entity and frees the
field again if it is not NULL. As dvb->entity may not NULLed in
dvb_create_media_entity() when the allocation of dvbdev->pad fails, a
double free may occur. This may also cause an Use After free in
media_device_unregister_entity().

Fix this by storing NULL to dvb->entity when it is freed.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00017.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux Subscribe
Linux Kernel Subscribe

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

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Vendors Products
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Advisories
Source ID Title
EUVD EUVD EUVD-2022-55655 In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07 cve-icon cve-icon
https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6 cve-icon cve-icon
https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198 cve-icon cve-icon
https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511 cve-icon cve-icon
https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837 cve-icon cve-icon
https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 cve-icon cve-icon
https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58 cve-icon cve-icon
https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271 cve-icon cve-icon
https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025100420-CVE-2022-50499-9f94@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50499 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50499 cve-icon
History

Fri, 23 Jan 2026 08:00:00 +0900

Type Values Removed Values Added
Weaknesses CWE-415
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Tue, 07 Oct 2025 07:45:00 +0900

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 06 Oct 2025 23:45:00 +0900

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Sun, 05 Oct 2025 01:00:00 +0900

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.
Title media: dvb-core: Fix double free in dvb_register_device()
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-04T15:43:50.064Z

Reserved: 2025-10-04T15:39:19.464Z

Link: CVE-2022-50499

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-10-04T16:15:47.027

Modified: 2026-01-22T19:57:00.573

Link: CVE-2022-50499

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-04T00:00:00Z

Links: CVE-2022-50499 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-06T23:41:12Z

Weaknesses