CVE-2022-50499 (GCVE-0-2022-50499)
Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2026-05-23 15:24
VLAI
EPSS
VEX
Title
media: dvb-core: Fix double free in dvb_register_device()
Summary
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.
Severity
7.8 (High)
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
9db28659aa893c68f162b11fd63bb7f6a713e52f , < 0588b12c418c3e4f927ced11f27b02ef4a5bfb07
(git)
Affected: 1399a136127bfe1b9bb7c951d9851da62a519121 , < e9a78485b658361fab6a5547377be6c1af6f1b3d (git) Affected: 4df2427a5148093987437054bb82da4d014dcd59 , < 70bc51303871159796b55ba1a8f16637b46c2511 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < b21f62b49ee9c3e0216d685d9cfd6003e5727271 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < acf984a3718c2458eb9e08b6714490a04f213c58 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 772892b29ac50c2c5e918fc80104aa6ede81d837 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 123eddf92a114e03919942641d2c2b1f4ca56ea6 (git) Affected: fcd5ce4b3936242e6679875a4d3c3acfc8743e15 , < 6b0d0477fce747d4137aa65856318b55fba72198 (git) Affected: 8c17f6f5d0d6aab72a2af25c9911ac66e984be06 (git) Affected: 202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c (git) Affected: 4.9.195 , < 4.9.337 (semver) Affected: 4.14.147 , < 4.14.303 (semver) Affected: 4.19.77 , < 4.19.270 (semver) Affected: 5.2.19 , < 5.3 (semver) Affected: 5.3.4 , < 5.4 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.4
Unaffected: 0 , < 5.4 (semver) Unaffected: 4.9.337 , ≤ 4.9.* (semver) Unaffected: 4.14.303 , ≤ 4.14.* (semver) Unaffected: 4.19.270 , ≤ 4.19.* (semver) Unaffected: 5.4.229 , ≤ 5.4.* (semver) Unaffected: 5.10.163 , ≤ 5.10.* (semver) Unaffected: 5.15.87 , ≤ 5.15.* (semver) Unaffected: 6.0.18 , ≤ 6.0.* (semver) Unaffected: 6.1.4 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix) |
guessed |
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-core: Fix double free in dvb_register_device()\n\nIn function dvb_register_device() -\u003e dvb_register_media_device() -\u003e\ndvb_create_media_entity(), dvb-\u003eentity is allocated and initialized. If\nthe initialization fails, it frees the dvb-\u003eentity, and return an error\ncode. The caller takes the error code and handles the error by calling\ndvb_media_device_free(), which unregisters the entity and frees the\nfield again if it is not NULL. As dvb-\u003eentity may not NULLed in\ndvb_create_media_entity() when the allocation of dvbdev-\u003epad fails, a\ndouble free may occur. This may also cause an Use After free in\nmedia_device_unregister_entity().\n\nFix this by storing NULL to dvb-\u003eentity when it is freed."
}
],
"id": "CVE-2022-50499",
"lastModified": "2026-06-17T05:23:40.437",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-10-04T16:15:47.027",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0588b12c418c3e4f927ced11f27b02ef4a5bfb07"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/123eddf92a114e03919942641d2c2b1f4ca56ea6"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6b0d0477fce747d4137aa65856318b55fba72198"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/70bc51303871159796b55ba1a8f16637b46c2511"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/772892b29ac50c2c5e918fc80104aa6ede81d837"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/acf984a3718c2458eb9e08b6714490a04f213c58"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b21f62b49ee9c3e0216d685d9cfd6003e5727271"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e9a78485b658361fab6a5547377be6c1af6f1b3d"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-415"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-30T10:38:15+00:00",
"cve": "CVE-2022-50499",
"id": "CVE-2022-50499",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: media: dvb-core: Fix double free in dvb_register_device()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50499.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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