CVE-2026-64176
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
20/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
wifi: iwlwifi: mvm: fix driver-set TX rates on old devices<br />
<br />
On old devices such as 7265D, rates are still encoded in version 1<br />
format, which doesn&#39;t use the CCK/OFDM rate index (0-3/0-7) but<br />
rather their PLCP value (e.g. 10 for 1 Mbps CCK rate.)<br />
<br />
While introducing v3 rates, I changed the driver from internally<br />
handling v1 rates and converting to v2, to internally handling v3<br />
and converting to v1 or v2 according to the firmware. I accordingly<br />
changed the code in iwl_mvm_mac80211_idx_to_hwrate() to no longer<br />
have different values for different APIs. This was correct.<br />
<br />
However, I later reverted this part of the change, because it was<br />
reported that I had broken beacon rates, causing a FW assert/crash.<br />
This caused TX_CMD rates to be set incorrectly, potentially causing<br />
a warning when reported back from the device as having been used.<br />
<br />
Fix this (hopefully correctly now) by handling beacon rates in the<br />
TX_CMD that&#39;s embedded in the beacon template command separately.<br />
Restore iwl_mvm_mac80211_idx_to_hwrate() to return only the rate<br />
index, not PLCP value, fixing the real TX_CMD.
Impacto
Puntuación base 3.x
8.10
Gravedad 3.x
ALTA



