CVE-2026-68351: wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read
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, carl9170cmdcallback() logs the mismatch and calls carl9170restart() 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68351?
The severity of CVE-2026-68351 is rated at risk level 23.
How do I fix CVE-2026-68351?
To fix CVE-2026-68351, ensure that you update to the latest version of the Linux kernel where this vulnerability has been addressed.
What vulnerabilities does CVE-2026-68351 address?
CVE-2026-68351 addresses an out-of-bounds read issue in the carl9170 driver of the Linux kernel.
What could happen if CVE-2026-68351 is exploited?
Exploitation of CVE-2026-68351 could lead to potential information disclosure or system instability due to out-of-bounds reads.
When was CVE-2026-68351 published?
CVE-2026-68351 was published on August 10, 2026.