CVE-2026-64176 (GCVE-0-2026-64176)
Vulnerability from cvelistv5
Published
2026-07-19 15:41
Modified
2026-10-19 20:28
Severity ?
8.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
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 iwl_mvm_mac80211_idx_to_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 TX_CMD that's embedded in the beacon template command separately. Restore iwl_mvm_mac80211_idx_to_hwrate() to return only the rate index, not PLCP value, fixing the real TX_CMD.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3592c0083fb29cca13cd9978b8844d58b4eff548
Version: 3592c0083fb29cca13cd9978b8844d58b4eff548
Version: 3592c0083fb29cca13cd9978b8844d58b4eff548
Version: c6c14c2b08e9c4c82e1ec39ef3e8b9ec845ac7fd
Version: 6.17.9   ≤
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