CVE-2026-68215

Service interruption via leaked device references

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource leak in the Linux radio-si476x driver allows local users to interrupt service through repeated failed device probes. The si476x_radio_probe() error path frees its control handler but fails to unregister the previously registered v4l2_device, retaining a parent-device reference after each failure. Exploitation requires local access and a Silicon Labs si476x radio; systems without that hardware are unaffected.

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 radio-si476x driver allows local users to interrupt service through repeated failed device probes. The si476x_radio_probe() error path frees its control handler but fails to unregister the previously registered v4l2_device, retaining a parent-device reference after each failure. Exploitation requires local access and a Silicon Labs si476x radio; systems without that hardware are unaffected.

The record

CVE
CVE-2026-68215
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.001
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=b879a9c2a755d4ddf9e685258de6435710fd2f03 <436a693af04ffb889aaf87cb69ec1f2b21d3569c
  3. Affected versionversion=b879a9c2a755d4ddf9e685258de6435710fd2f03 <4ca9c9f12b1bc341a0a3bbbd2090fd182db53771
  4. Affected versionversion=b879a9c2a755d4ddf9e685258de6435710fd2f03 <64cb15878b35e5574ff4f80a0b613a79e47867ba
  5. Affected versionversion=b879a9c2a755d4ddf9e685258de6435710fd2f03 <730c235d7d2c80a401dac56b0f5066c889aa442d
  6. Affected versionversion=b879a9c2a755d4ddf9e685258de6435710fd2f03 <7ef9f1659404544a8dddd68842bafcb4a38197af

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=b879a9c2a755d4ddf9e685258de6435710fd2f03 <436a693af04ffb889aaf87cb69ec1f2b21d3569c; version=b879a9c2a755d4ddf9e685258de6435710fd2f03 <4ca9c9f12b1bc341a0a3bbbd2090fd182db53771; version=b879a9c2a755d4ddf9e685258de6435710fd2f03 <64cb15878b35e5574ff4f80a0b613a79e47867ba; version=b879a9c2a755d4ddf9e685258de6435710fd2f03 <730c235d7d2c80a401dac56b0f5066c889aa442d; version=b879a9c2a755d4ddf9e685258de6435710fd2f03 <7ef9f1659404544a8dddd68842bafcb4a38197af

Published CVSS scores

5.5Red HatCVSS: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.

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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-772Missing Release of Resource after Effective Lifetime
T1499.001OS Exhaustion Flood

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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