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Vulnerabilities CVE-2023-53589

CVE-2023-53589

High
Open
TLP:CLEAR

wifi: iwlwifi: mvm: don't trust firmware n_channels

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Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: don't trust firmware n_channels If the firmware sends us a corrupted MCC response with n_channels much larger than the command response can be, we might copy far too much (uninitialized) memory and even crash if the n_channels is large enough to make it run out of the one page allocated for the FW response. Fix that by checking the lengths. Doing a < comparison would be sufficient, but the firmware should be doing it correctly, so check more strictly.

Details

CVSS Score
8.8
EPSS Score
0.22%

12.5th percentile

CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Oct 4, 2025
Last Modified
Aug 5, 2026
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