CVE-2026-68351

Kernel-memory disclosure via unchecked firmware response length

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds read in the Linux kernel carl9170 driver allows local users to disclose kernel memory via a malformed firmware response. The carl9170_cmd_callback() mismatch path restarts the adapter but falls through to memcpy(), trusting a firmware-supplied length beyond ar->readlen. Reachability requires an Atheros AR9170 USB device using carl9170 firmware; the overread can expose memory or destabilize the system.

CVSS severity7.0
High
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

Out-of-bounds read in the Linux kernel carl9170 driver allows local users to disclose kernel memory via a malformed firmware response. The carl9170_cmd_callback() mismatch path restarts the adapter but falls through to memcpy(), trusting a firmware-supplied length beyond ar->readlen. Reachability requires an Atheros AR9170 USB device using carl9170 firmware; the overread can expose memory or destabilize the system.

The record

CVE
CVE-2026-68351
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
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=2.6.37
  2. Affected versionversion=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <4cde55b2feff9504d1f993ab80e84e7ccb62791c
  3. Affected versionversion=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <500c36649f270de05a56591fcc1aaaa36687958e
  4. Affected versionversion=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <9aee949c68dc6dccbc54333537b109c53fe2079f
  5. Affected versionversion=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <cb7a38810cf25738176dac32dec7a146b3f959cf
  6. Affected versionversion=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <f74e34e66379e487a09009a4f2d42470051672bd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.37; version=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <4cde55b2feff9504d1f993ab80e84e7ccb62791c; version=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <500c36649f270de05a56591fcc1aaaa36687958e; version=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <9aee949c68dc6dccbc54333537b109c53fe2079f; version=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <cb7a38810cf25738176dac32dec7a146b3f959cf; version=a84fab3cbfdc427e7d366f1cc844f27b2084c26c <f74e34e66379e487a09009a4f2d42470051672bd

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.5Amazon LinuxCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

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

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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