In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: fix driver-set TX rates on old devices
On old devices such as 7265D, rates are still encoded in version 1 format, which doesn't use the CCK/OFDM rate index (0-3/0-7) but rather their PLCP value (e.g. 10 for 1 Mbps CCK rate.)
While introducing v3 rates, I changed the driver from internally handling v1 rates and converting to v2, to internally handling v3 and converting to v1 or v2 according to the firmware. I accordingly changed the code in iwlmvmmac80211idxto_hwrate() to no longer have different values for different APIs. This was correct.
However, I later reverted this part of the change, because it was reported that I had broken beacon rates, causing a FW assert/crash. This caused TX_CMD rates to be set incorrectly, potentially causing a warning when reported back from the device as having been used.
Fix this (hopefully correctly now) by handling beacon rates in the TXCMD that's embedded in the beacon template command separately. Restore iwlmvmmac80211idxtohwrate() to return only the rate index, not PLCP value, fixing the real TX_CMD.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64176.json",
"cna_assigner": "Linux"
}