FKIE_CVE-2026-89870
Vulnerability from fkie_nvd - Published: 2026-09-16 11:16 - Updated: 2026-09-16 15:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: zoran: Avoid freeing a registered video_device twice
zoran_init_video_device() installs zoran_vdev_release() as the
video_device release callback through zoran_template. After
video_register_device() succeeds, video_unregister_device() drops the
registered video_device reference and the V4L2 core eventually invokes
that release callback, which kfree()s the video_device.
zoran_exit_video_devices() called video_unregister_device() and then
kfree(zr->video_dev), so device teardown could free the same
video_device twice.
Remove the direct kfree() and clear the cached pointer after
unregistering. The pre-registration failure path keeps its manual free
because the video_device was not registered there.
This issue was found by a static analysis checker and confirmed by
manual source review.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/media/pci/zoran/zoran_card.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3ad6cf27505017a6794f5f96c31218c2291e951b",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"lessThan": "c4acac8cdc005b2d14b6cef5e215d264212857f3",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"lessThan": "4d99d8d0d895489064783601a516bd45812fa992",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"lessThan": "f1c4f3885df1f09bcab5296d86834d104f865e86",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"lessThan": "672dbccf4351370dad002d3c78dbb29ca1588f22",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"lessThan": "0735e0b5a96761a9ce277a238e834008ad92a0a5",
"status": "affected",
"version": "82e3a496eb56da0b9f29fdc5b63cedb3289e91de",
"versionType": "git"
},
{
"status": "affected",
"version": "bd01629315ffd5b63da91d0bd529a77d30e55028",
"versionType": "git"
},
{
"status": "affected",
"version": "ff3357bffd9fb78f59762d8955afc7382a279079",
"versionType": "git"
},
{
"status": "affected",
"version": "c1ba65100a359fe28cfe37e09e10c99f247cbf1e",
"versionType": "git"
},
{
"status": "affected",
"version": "1e501ec38796f43e995731d1bcd4173cb1ccfce0",
"versionType": "git"
},
{
"lessThan": "5.11",
"status": "affected",
"version": "5.10.110",
"versionType": "semver"
},
{
"lessThan": "5.16",
"status": "affected",
"version": "5.15.33",
"versionType": "semver"
},
{
"lessThan": "5.17",
"status": "affected",
"version": "5.16.19",
"versionType": "semver"
},
{
"lessThan": "5.18",
"status": "affected",
"version": "5.17.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/media/pci/zoran/zoran_card.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"lessThan": "5.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: zoran: Avoid freeing a registered video_device twice\n\nzoran_init_video_device() installs zoran_vdev_release() as the\nvideo_device release callback through zoran_template. After\nvideo_register_device() succeeds, video_unregister_device() drops the\nregistered video_device reference and the V4L2 core eventually invokes\nthat release callback, which kfree()s the video_device.\n\nzoran_exit_video_devices() called video_unregister_device() and then\nkfree(zr-\u003evideo_dev), so device teardown could free the same\nvideo_device twice.\n\nRemove the direct kfree() and clear the cached pointer after\nunregistering. The pre-registration failure path keeps its manual free\nbecause the video_device was not registered there.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review."
}
],
"id": "CVE-2026-89870",
"lastModified": "2026-09-16T15:18:14.187",
"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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-09-16T11:16:55.153",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0735e0b5a96761a9ce277a238e834008ad92a0a5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3ad6cf27505017a6794f5f96c31218c2291e951b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/4d99d8d0d895489064783601a516bd45812fa992"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/672dbccf4351370dad002d3c78dbb29ca1588f22"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c4acac8cdc005b2d14b6cef5e215d264212857f3"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f1c4f3885df1f09bcab5296d86834d104f865e86"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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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
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