VulnerabilityPublished 10 Aug 2026Updated 6 Nov 2026

CVE-2026-68351: Linux kernel · wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f74e34e66379e487a09009a4f2d42470051672bd : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in f74e34e66379e487a09009a4f2d42470051672bd, cb7a38810cf25738176dac32dec7a146b3f959cf, 525036b20ef01d814a7fcd0567d123992e4479fa +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < f74e34e66379e487a09009a4f2d42470051672bd	Fixed in f74e34e66379e487a09009a4f2d42470051672bd
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < cb7a38810cf25738176dac32dec7a146b3f959cf	Fixed in cb7a38810cf25738176dac32dec7a146b3f959cf
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 525036b20ef01d814a7fcd0567d123992e4479fa	Fixed in 525036b20ef01d814a7fcd0567d123992e4479fa
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 500c36649f270de05a56591fcc1aaaa36687958e	Fixed in 500c36649f270de05a56591fcc1aaaa36687958e
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 38e240996a6a78c94ab07d461fd66e361d55c3c4	Fixed in 38e240996a6a78c94ab07d461fd66e361d55c3c4
LinuxLinux	Affected ≥ a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 9aee949c68dc6dccbc54333537b109c53fe2079f	Fixed in 9aee949c68dc6dccbc54333537b109c53fe2079f

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read When the firmware sends a command response with a length mismatch, carl9170_cmd_callback() logs the mismatch and calls carl9170_restart() but then falls through to memcpy(ar->readbuf, buffer + 4, len - 4). Since len comes from the firmware and can exceed ar->readlen, this copies more data than the readbuf was allocated for. Bound the memcpy to min(len - 4, ar->readlen) so that the response is still completed -- avoiding repeated restarts from queued garbage -- while preventing an overread past the response buffer.

References

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