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.

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No CVSS v4.0

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Affected Vendors & Products

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Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/4cde55b2feff9504d1f993ab80e84e7ccb62791c cve-icon
https://git.kernel.org/stable/c/500c36649f270de05a56591fcc1aaaa36687958e cve-icon
https://git.kernel.org/stable/c/9aee949c68dc6dccbc54333537b109c53fe2079f cve-icon
https://git.kernel.org/stable/c/cb7a38810cf25738176dac32dec7a146b3f959cf cve-icon
https://git.kernel.org/stable/c/f74e34e66379e487a09009a4f2d42470051672bd cve-icon
History

Mon, 10 Aug 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787

Mon, 10 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
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.
Title wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-10T12:03:28.312Z

Reserved: 2026-07-30T09:28:09.384Z

Link: CVE-2026-68351

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-10T17:30:17Z