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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 38e240996a6a78c94ab07d461fd66e361d55c3c4; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 2d05c321d27624c413c950278d2dc8e0f44a8950; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 525036b20ef01d814a7fcd0567d123992e4479fa; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < f74e34e66379e487a09009a4f2d42470051672bd; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 500c36649f270de05a56591fcc1aaaa36687958e; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 9aee949c68dc6dccbc54333537b109c53fe2079f; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < cb7a38810cf25738176dac32dec7a146b3f959cf; >= a84fab3cbfdc427e7d366f1cc844f27b2084c26c, < 4cde55b2feff9504d1f993ab80e84e7ccb62791c |
| Linux | Linux | 2.6.37 |
References
- https://git.kernel.org/stable/c/2d05c321d27624c413c950278d2dc8e0f44a8950
- https://git.kernel.org/stable/c/38e240996a6a78c94ab07d461fd66e361d55c3c4
- https://git.kernel.org/stable/c/4cde55b2feff9504d1f993ab80e84e7ccb62791c
- https://git.kernel.org/stable/c/500c36649f270de05a56591fcc1aaaa36687958e
- https://git.kernel.org/stable/c/525036b20ef01d814a7fcd0567d123992e4479fa
- https://git.kernel.org/stable/c/9aee949c68dc6dccbc54333537b109c53fe2079f
- https://git.kernel.org/stable/c/cb7a38810cf25738176dac32dec7a146b3f959cf
- https://git.kernel.org/stable/c/f74e34e66379e487a09009a4f2d42470051672bd
Timeline
- Published
- Aug 10, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Received