CVE-2026-68366

Memory disclosure and crash via UVC over-read

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds read in the Linux UVC gadget driver allows context-dependent attackers to disclose kernel memory or crash the device via USB. uvc_send_response() limits memcpy() by the host wLength and ioctl data length but not by the 60-byte data->data source buffer. UVC gadget mode, a connected USB host, and a userspace response with both lengths above 60 are required; systems not using UVC gadget mode are unaffected.

CVSS severity5.5
Medium
EPSS probability0.18%
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 UVC gadget driver allows context-dependent attackers to disclose kernel memory or crash the device via USB. uvc_send_response() limits memcpy() by the host wLength and ioctl data length but not by the 60-byte data->data source buffer. UVC gadget mode, a connected USB host, and a userspace response with both lengths above 60 are required; systems not using UVC gadget mode are unaffected.

The record

CVE
CVE-2026-68366
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record 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=3.10
  2. Affected versionversion=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <1f03658f3e9b2f8fd1d1003ba389a0390b49a350
  3. Affected versionversion=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <4e116372b7a4f87df0dc0ed4b0ab5b0bb0cc5796
  4. Affected versionversion=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <662f6c6c6ff8a6c508e1646c09cae74e28f3cca6
  5. Affected versionversion=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <b70dc75e85ba968b7b76eebfe5d63000080b875b
  6. Affected versionversion=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <c8510fbbea09ef0170b56b14dc2b5890dc75be07

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <1f03658f3e9b2f8fd1d1003ba389a0390b49a350; version=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <4e116372b7a4f87df0dc0ed4b0ab5b0bb0cc5796; version=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <662f6c6c6ff8a6c508e1646c09cae74e28f3cca6; version=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <b70dc75e85ba968b7b76eebfe5d63000080b875b; version=a5eaaa1f33e771fa1651a4a7652b8a5f9fa7f6c1 <c8510fbbea09ef0170b56b14dc2b5890dc75be07

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

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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