CVE-2022-50499
media: dvb-core: Fix double free in dvb_register_device()
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.
INFO
Published Date :
Oct. 4, 2025, 4:15 p.m.
Last Modified :
Jan. 22, 2026, 7:57 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Ensure entities are set to NULL after freeing.
- Store NULL to dvb->entity when it is freed.
- Apply kernel patches addressing the double free issue.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-50499.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50499 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50499
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50499 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50499 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jan. 22, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-415 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.163 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.87 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.2.19 up to (excluding) 5.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1 up to (excluding) 6.1.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.0.18 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14.147 up to (excluding) 4.14.303 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19.77 up to (excluding) 4.19.270 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9.195 up to (excluding) 4.9.337 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.3.4 up to (excluding) 5.4.229 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 04, 2025
Action Type Old Value New Value 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. Added Reference https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07 Added Reference https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6 Added Reference https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198 Added Reference https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511 Added Reference https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837 Added Reference https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 Added Reference https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58 Added Reference https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271 Added Reference https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d