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Vulnerability Details :

CVE-2026-64176

Summary
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At-19 Jul, 2026 | 15:41
Updated At-20 Jul, 2026 | 06:41
Rejected At-
Credits

wifi: iwlwifi: mvm: fix driver-set TX rates on old devices

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.

Vendors
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Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
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EPSS History
Score
Latest Score
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N/A
No data available for selected date range
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Latest Percentile
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Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Linux
Assigner Org ID:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:19 Jul, 2026 | 15:41
Updated At:20 Jul, 2026 | 06:41
Rejected At:
▼CVE Numbering Authority (CNA)
wifi: iwlwifi: mvm: fix driver-set TX rates on old devices

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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
  • drivers/net/wireless/intel/iwlwifi/mvm/utils.c
Default Status
unaffected
Versions
Affected
  • From 3592c0083fb29cca13cd9978b8844d58b4eff548 before 6fe92651b44fd3cfc8dcfdaad0e82885c384dada (git)
  • From 3592c0083fb29cca13cd9978b8844d58b4eff548 before 6b58a79f2cd98156856eb49e8b55db5facdd7e6d (git)
  • From 3592c0083fb29cca13cd9978b8844d58b4eff548 before fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b (git)
  • c6c14c2b08e9c4c82e1ec39ef3e8b9ec845ac7fd (git)
  • From 6.17.9 before 6.18 (semver)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
  • drivers/net/wireless/intel/iwlwifi/mvm/utils.c
Default Status
affected
Versions
Affected
  • 6.18
Unaffected
  • From 0 before 6.18 (semver)
  • From 6.18.34 through 6.18.* (semver)
  • From 7.0.11 through 7.0.* (semver)
  • From 7.1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada
N/A
https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d
N/A
https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b
N/A
Hyperlink: https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published At:19 Jul, 2026 | 16:17
Updated At:20 Jul, 2026 | 07:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches

Evaluator Description

Evaluator Impact

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Vendor Statements

References
HyperlinkSourceResource
https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
Hyperlink: https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A

Change History

0
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