{"api_version":"1","generated_at":"2026-07-20T14:42:14+00:00","cve":"CVE-2026-64176","urls":{"html":"https://cve.report/CVE-2026-64176","api":"https://cve.report/api/cve/CVE-2026-64176.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64176","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64176"},"summary":{"title":"wifi: iwlwifi: mvm: fix driver-set TX rates on old devices","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: fix driver-set TX rates on old devices\n\nOn 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.)\n\nWhile 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.\n\nHowever, 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.\n\nFix 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:59","updated_at":"2026-07-20 07:16:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada","name":"https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d","name":"https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b","name":"https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64176","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64176","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3592c0083fb29cca13cd9978b8844d58b4eff548 6fe92651b44fd3cfc8dcfdaad0e82885c384dada git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3592c0083fb29cca13cd9978b8844d58b4eff548 6b58a79f2cd98156856eb49e8b55db5facdd7e6d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3592c0083fb29cca13cd9978b8844d58b4eff548 fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6c14c2b08e9c4c82e1ec39ef3e8b9ec845ac7fd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.17.9 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c","drivers/net/wireless/intel/iwlwifi/mvm/utils.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6fe92651b44fd3cfc8dcfdaad0e82885c384dada","status":"affected","version":"3592c0083fb29cca13cd9978b8844d58b4eff548","versionType":"git"},{"lessThan":"6b58a79f2cd98156856eb49e8b55db5facdd7e6d","status":"affected","version":"3592c0083fb29cca13cd9978b8844d58b4eff548","versionType":"git"},{"lessThan":"fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b","status":"affected","version":"3592c0083fb29cca13cd9978b8844d58b4eff548","versionType":"git"},{"status":"affected","version":"c6c14c2b08e9c4c82e1ec39ef3e8b9ec845ac7fd","versionType":"git"},{"lessThan":"6.18","status":"affected","version":"6.17.9","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c","drivers/net/wireless/intel/iwlwifi/mvm/utils.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: fix driver-set TX rates on old devices\n\nOn 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.)\n\nWhile 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.\n\nHowever, 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.\n\nFix 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."}],"providerMetadata":{"dateUpdated":"2026-07-20T06:41:52.827Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada"},{"url":"https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d"},{"url":"https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b"}],"title":"wifi: iwlwifi: mvm: fix driver-set TX rates on old devices","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64176","datePublished":"2026-07-19T15:41:00.830Z","dateReserved":"2026-07-19T07:54:57.039Z","dateUpdated":"2026-07-20T06:41:52.827Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:59","lastModifiedDate":"2026-07-20 07:16:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64176","Ordinal":"1","Title":"wifi: iwlwifi: mvm: fix driver-set TX rates on old devices","CVE":"CVE-2026-64176","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64176","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: fix driver-set TX rates on old devices\n\nOn 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.)\n\nWhile 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.\n\nHowever, 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.\n\nFix 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.","Type":"Description","Title":"wifi: iwlwifi: mvm: fix driver-set TX rates on old devices"}]}}}