# CVE-2022-50725: linux: In the Linux kernel, the following vulnerability has been resolved:  media: vidtv: Fix use-after-free in vidtv_bridge...

CVE-2022-50725 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50725, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50725
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  media: vidtv: Fix use-after-free in vidtv_bridge_dvb_init()  KASAN reports a use-after-free: BUG: KASAN: use-after-free in dvb_dmxdev_release+0x4d5/0x5d0 [dvb_core] Call Trace:  ...  dvb_dmxdev_release+0x4d5/0x5d0 [dvb_core]  vidtv_bridge_probe+0x7bf/0xa40 [dvb_vidtv_bridge]  platform_probe+0xb6/0x170  ... Allocated by task 1238:  ...  dvb_register_device+0x1a7/0xa70 [dvb_core]  dvb_dmxdev_init+0x2af/0x4a0 [dvb_core]  vidtv_bridge_probe+0x766/0xa40 [dvb_vidtv_bridge]  ... Freed by task 1238:  dvb_register_device+0x6d2/0xa70 [dvb_core]  dvb_dmxdev_init+0x2af/0x4a0 [dvb_core]  vidtv_bridge_probe+0x766/0xa40 [dvb_vidtv_bridge]  ...  It is because the error handling in vidtv_bridge_dvb_init() is wrong.  First, vidtv_bridge_dmx(dev)_init() will clean themselves when fail, but goto fail_dmx(_dev): calls release functions again, which causes use-after-free.  Also, in fail_fe, fail_tuner_probe and fail_demod_probe, j = i will cause out-of-bound when i finished its loop (i == NUM_FE). And the loop releasing is wrong, although now NUM_FE is 1 so it won't cause problem.  Fix this by correctly releasing everything.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50725](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50725.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50725](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50725.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50725](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50725.md) | Dec 24, 2025 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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