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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00026.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
f90cf6079bf67988f8b1ad1ade70fc89d0080905 affected < 0369af6fe33d4053899b121b32e91f870b2cf0ae
f90cf6079bf67988f8b1ad1ade70fc89d0080905 affected < c290aa527fd832d278c6388a3ba53a9890fbd74a
f90cf6079bf67988f8b1ad1ade70fc89d0080905 affected < 06398ce69571a43a8a0dd0f1bfe35d221f726a6a
f90cf6079bf67988f8b1ad1ade70fc89d0080905 affected < 8a204a0b4a0d105229735222c515759ea2b126c1
f90cf6079bf67988f8b1ad1ade70fc89d0080905 affected < ba8d9405935097e296bcf7a942c3a01df0edb865
Linux Linux affected
Version Status Constraints
5.10 affected —
0 unaffected < 5.10
5.10.163 unaffected ≤ 5.10.*
5.15.86 unaffected ≤ 5.15.*
6.0.16 unaffected ≤ 6.0.*
6.1.2 unaffected ≤ 6.1.*
6.2 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/0369af6fe33d4053899b121b32e91f870b2cf0ae cve-icon cve-icon
https://git.kernel.org/stable/c/06398ce69571a43a8a0dd0f1bfe35d221f726a6a cve-icon cve-icon
https://git.kernel.org/stable/c/8a204a0b4a0d105229735222c515759ea2b126c1 cve-icon cve-icon
https://git.kernel.org/stable/c/ba8d9405935097e296bcf7a942c3a01df0edb865 cve-icon cve-icon
https://git.kernel.org/stable/c/c290aa527fd832d278c6388a3ba53a9890fbd74a cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025122418-CVE-2022-50725-967f@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50725 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50725 cve-icon
History

Thu, 25 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Wed, 24 Dec 2025 12:45:00 +0000

Type Values Removed Values Added
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.
Title media: vidtv: Fix use-after-free in vidtv_bridge_dvb_init()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-24T12:22:46.939Z

Reserved: 2025-12-24T12:20:40.330Z

Link: CVE-2022-50725

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-24T13:15:59.157

Modified: 2025-12-29T15:58:34.503

Link: CVE-2022-50725

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2022-50725 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

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