CVE-2025-38680

Kernel memory read via short UVC descriptor

Published Sep 4, 2025 · Updated Sep 4, 2025

Out-of-bounds read in the Linux kernel uvcvideo driver allows local users to read kernel memory or crash a host via a malformed UVC descriptor. The pre-call length check accepts a three-byte descriptor, but uvc_parse_format then reads buffer[3], one byte past the supplied data. Exploitation requires local access and control of a UVC device descriptor; each malformed descriptor causes a one-byte over-read, and the resulting fault can interrupt the host.

CVSS severity7.1
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux kernel uvcvideo driver allows local users to read kernel memory or crash a host via a malformed UVC descriptor. The pre-call length check accepts a three-byte descriptor, but uvc_parse_format then reads buffer[3], one byte past the supplied data. Exploitation requires local access and control of a UVC device descriptor; each malformed descriptor causes a one-byte over-read, and the resulting fault can interrupt the host.

The record

CVE
CVE-2025-38680
Published
Sep 4, 2025
Updated
Sep 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.26
  2. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <1e269581b3aa5962fdc52757ab40da286168c087
  3. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <424980d33b3f816485513e538610168b03fab9f1
  4. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <6d4a7c0b296162354b6fc759a1475b9d57ddfaa6
  5. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <782b6a718651eda3478b1824b37a8b3185d2740c
  6. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <8343f3fe0b755925f83d60b05e92bf4396879758
  7. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <9ad554217c9b945031c73df4e8176a475e2dea57
  8. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <a97e062e4ff3dab84a2f1eb811e9eddc6699e2a9
  9. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <cac702a439050df65272c49184aef7975fe3eff2
  10. Affected versionversion=c0efd232929c2cd87238de2cccdaf4e845be5b0c <ffdd82182953df643aa63d999b6f1653d0c93778

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.26; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <1e269581b3aa5962fdc52757ab40da286168c087; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <424980d33b3f816485513e538610168b03fab9f1; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <6d4a7c0b296162354b6fc759a1475b9d57ddfaa6; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <782b6a718651eda3478b1824b37a8b3185d2740c; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <8343f3fe0b755925f83d60b05e92bf4396879758; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <9ad554217c9b945031c73df4e8176a475e2dea57; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <a97e062e4ff3dab84a2f1eb811e9eddc6699e2a9; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <cac702a439050df65272c49184aef7975fe3eff2; version=c0efd232929c2cd87238de2cccdaf4e845be5b0c <ffdd82182953df643aa63d999b6f1653d0c93778

Published CVSS scores

7.1CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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