In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: iwlwifi: mvm: fix driver-set TX rates on old devices<\/p>\n
On old devices such as 7265D, rates are still encoded in version 1
\nformat, which doesn’t use the CCK\/OFDM rate index (0-3\/0-7) but
\nrather their PLCP value (e.g. 10 for 1 Mbps CCK rate.)<\/p>\n
While introducing v3 rates, I changed the driver from internally
\nhandling v1 rates and converting to v2, to internally handling v3
\nand converting to v1 or v2 according to the firmware. I accordingly
\nchanged the code in iwl_mvm_mac80211_idx_to_hwrate() to no longer
\nhave different values for different APIs. This was correct.<\/p>\n
However, I later reverted this part of the change, because it was
\nreported that I had broken beacon rates, causing a FW assert\/crash.
\nThis caused TX_CMD rates to be set incorrectly, potentially causing
\na warning when reported back from the device as having been used.<\/p>\n
Fix this (hopefully correctly now) by handling beacon rates in the
\nTX_CMD that’s embedded in the beacon template command separately.
\nRestore iwl_mvm_mac80211_idx_to_hwrate() to return only the rate
\nindex, not PLCP value, fixing the real TX_CMD.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: iwlwifi: mvm: fix driver-set TX rates on old devices<\/p>\n
On old devices such as 7265D, rates are still encoded in version 1
\nform<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15113","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}