CVE-2025-68362

Kernel panic via truncated rtl8187 receive packet

Published Dec 24, 2025 · Updated Dec 24, 2025

Buffer underflow in Linux 2.6.27 and later with an affected rtl8187 driver allows attackers to trigger a kernel panic via a truncated packet. The rtl8187_rx_cb() callback subtracts an RTL8187 or RTL8187B descriptor size from the socket-buffer tail without first checking skb->len. The crash path requires the affected driver for compatible USB wireless hardware to process a receive completion shorter than its descriptor.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer underflow in Linux 2.6.27 and later with an affected rtl8187 driver allows attackers to trigger a kernel panic via a truncated packet. The rtl8187_rx_cb() callback subtracts an RTL8187 or RTL8187B descriptor size from the socket-buffer tail without first checking skb->len. The crash path requires the affected driver for compatible USB wireless hardware to process a receive completion shorter than its descriptor.

The record

CVE
CVE-2025-68362
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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=2.6.27
  2. Affected versionversion=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <4758770a673c60d8f615809304d72e1432fa6355
  3. Affected versionversion=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <5ebf0fe7eaef9f6173a4c6ea77c5353e21645d15
  4. Affected versionversion=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <638d4148e166d114a4cd7becaae992ce1a815ed8
  5. Affected versionversion=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <b647d2574e4583c2e3b0ab35568f60c88e910840

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <4758770a673c60d8f615809304d72e1432fa6355; version=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <5ebf0fe7eaef9f6173a4c6ea77c5353e21645d15; version=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <638d4148e166d114a4cd7becaae992ce1a815ed8; version=6f7853f3cbe457067e9fe05461f56c7ea4ac488c <b647d2574e4583c2e3b0ab35568f60c88e910840

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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