# CVE-2022-50499: linux: In the Linux kernel, the following vulnerability has been resolved:  media: dvb-core: Fix double free in dvb_register...

CVE-2022-50499 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50499, released October 4, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50499
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2025

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50499](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50499.md) | Oct 4, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50499](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50499.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50499](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50499.md) | Oct 4, 2025 |

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