CVE-2026-68351

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa84fab3cbfdc427e7d366f1cc844f27b2084c26c < f74e34e66379e487a09009a4f2d42470051672bdaffected
LinuxLinuxa84fab3cbfdc427e7d366f1cc844f27b2084c26c < 500c36649f270de05a56591fcc1aaaa36687958eaffected
LinuxLinuxa84fab3cbfdc427e7d366f1cc844f27b2084c26c < 9aee949c68dc6dccbc54333537b109c53fe2079faffected
LinuxLinuxa84fab3cbfdc427e7d366f1cc844f27b2084c26c < cb7a38810cf25738176dac32dec7a146b3f959cfaffected
LinuxLinuxa84fab3cbfdc427e7d366f1cc844f27b2084c26c < 4cde55b2feff9504d1f993ab80e84e7ccb62791caffected
LinuxLinux2.6.37affected
LinuxLinux0 < 2.6.37unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc5 <= *unaffected

Weaknesses

References