CVE-2026-93062: wifi: iwlwifi: guard against division by zero in iwl_dbg_tlv_alloc_fragments
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: guard against division by zero in iwldbgtlvallocfragments
Make sure we don't end-up with a numfrags = 0 situation. For that, check that the required size is not 0 and put a checker on numfrags as well.
Event History
Frequently Asked Questions
Which systems are potentially affected?
Systems running a Linux kernel with the iwlwifi driver are potentially affected. The provided information does not identify specific kernel versions or affected Intel wireless hardware.
What condition triggers the flaw?
The issue occurs when iwl_dbg_tlv_alloc_fragments reaches a state where the required size is zero, resulting in num_frags being zero and creating a division-by-zero condition.
What does the available fix change?
The fix checks that the required size is not zero and adds validation for num_frags, preventing a zero-fragment calculation.