CVE-2026-68217

Service interruption via leaked streaming buffer

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource leak in the Linux kernel pwc driver allows local users to interrupt video streaming by triggering a streaming-start failure. During pwc_isoc_init(), a URB completion can move a queued buffer into pdev->fill_buf before a later submission fails, but start_streaming() drains only pdev->queued_bufs and leaves that buffer owned by the driver. The path requires local access to a supported USB camera and a failed isochronous URB submission; the leaked ownership triggers a kernel warning and interrupts the attempted stream.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux kernel pwc driver allows local users to interrupt video streaming by triggering a streaming-start failure. During pwc_isoc_init(), a URB completion can move a queued buffer into pdev->fill_buf before a later submission fails, but start_streaming() drains only pdev->queued_bufs and leaves that buffer owned by the driver. The path requires local access to a supported USB camera and a failed isochronous URB submission; the leaked ownership triggers a kernel warning and interrupts the attempted stream.

The record

CVE
CVE-2026-68217
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=3.1
  2. Affected versionversion=885fe18f5542fe283a17f70583383c6cadcba1c3 <5d4812668b03f823b5044789d6aa77fe56b42587
  3. Affected versionversion=885fe18f5542fe283a17f70583383c6cadcba1c3 <906e410dcffbbd99fb4081abab817a830033aa28
  4. Affected versionversion=885fe18f5542fe283a17f70583383c6cadcba1c3 <9afd605dcd96c7a45f338eded1de16679b30e1df
  5. Affected versionversion=885fe18f5542fe283a17f70583383c6cadcba1c3 <a56e7641e09bd80b976e944ae759109b86fd5b38
  6. Affected versionversion=885fe18f5542fe283a17f70583383c6cadcba1c3 <acc789b2173070638cad89c2b61d33ed338be0dd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.1; version=885fe18f5542fe283a17f70583383c6cadcba1c3 <5d4812668b03f823b5044789d6aa77fe56b42587; version=885fe18f5542fe283a17f70583383c6cadcba1c3 <906e410dcffbbd99fb4081abab817a830033aa28; version=885fe18f5542fe283a17f70583383c6cadcba1c3 <9afd605dcd96c7a45f338eded1de16679b30e1df; version=885fe18f5542fe283a17f70583383c6cadcba1c3 <a56e7641e09bd80b976e944ae759109b86fd5b38; version=885fe18f5542fe283a17f70583383c6cadcba1c3 <acc789b2173070638cad89c2b61d33ed338be0dd

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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