CVE-2026-31583 (GCVE-0-2026-31583)
Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-06-14 17:42
VLAI
EPSS
VEX
Title
media: em28xx: fix use-after-free in em28xx_v4l2_open()
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: em28xx: fix use-after-free in em28xx_v4l2_open()
em28xx_v4l2_open() reads dev->v4l2 without holding dev->lock,
creating a race with em28xx_v4l2_init()'s error path and
em28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct
and set dev->v4l2 to NULL under dev->lock.
This race leads to two issues:
- use-after-free in v4l2_fh_init() when accessing vdev->ctrl_handler,
since the video_device is embedded in the freed em28xx_v4l2 struct.
- NULL pointer dereference in em28xx_resolution_set() when accessing
v4l2->norm, since dev->v4l2 has been set to NULL.
Fix this by moving the mutex_lock() before the dev->v4l2 read and
adding a NULL check for dev->v4l2 under the lock.
Severity
7.8 (High)
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8139a4d583abad45eb987b5a99b3281b6d435b7e , < 3c0283a59e36e3707c4a81f4952e362d31f876b8
(git)
Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < 2cbf81f76842e46bdf25823c70e1db4044a65678 (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < 38a327221f7f765e7d853b7bafe47e342441ec85 (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < b5d141ea15f173f15b9f0a72965902f3428c0d92 (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < 5fb2940327722b4684d2f964b54c1c90aa277324 (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < 871b8ea8ef39a6c253594649f4339378fad3d0dd (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < 6b9e66437cc6123ddedac141e1b8b6fcf57d2972 (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < dd2b888e08d3b3d6aacd65d76cd44fac11da750f (git) Affected: 8139a4d583abad45eb987b5a99b3281b6d435b7e , < a66485a934c7187ae8e36517d40615fa2e961cff (git) |
guessed | |
| Linux | Linux |
Affected:
3.16
Unaffected: 0 , < 3.16 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0.1 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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"integrityImpact": "HIGH",
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},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:26:36+00:00",
"cve": "CVE-2026-31583",
"id": "CVE-2026-31583",
"initial_release_date": "2026-04-24T00:00:00+00:00",
"product_status:known_affected": "260",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: media: em28xx: fix use-after-free in em28xx_v4l2_open()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31583.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-11T01:30:30Z",
"cve": "CVE-2026-31583",
"id": "CVE-2026-31583",
"initial_release_date": "2026-04-25T01:38:48Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "706",
"product_status:known_not_affected": "4",
"product_status:recommended": "254",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-31583",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-31583.json",
"version": "14"
}
}
}
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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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