CVE-2026-93065: wifi: iwlwifi: fix counter type in iwl_fwrt_dump_error_logs
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: fix counter type in iwlfwrtdumperrorlogs
The loop counter 'count' was declared as u8 while numpc is u32. If firmware advertises more than 255 PC entries the counter wraps back to zero and the loop never terminates potentially causing an infinite loop or reading past the allocated pcdata array.
Change the declaration to u32 to match numpc.
Affected Software
Event History
Frequently Asked Questions
What systems are exposed to this issue?
Systems running the Linux kernel with the iwlwifi driver are exposed when the affected error-log dump path processes firmware data advertising more than 255 PC entries.
What does an attacker or trigger need to cause the fault?
The vulnerable loop is triggered by firmware advertising more than 255 PC entries. The provided information does not establish whether this can be induced remotely or requires compromised, malicious, or faulty firmware.
What can happen if the condition is reached?
The 8-bit loop counter can wrap to zero, causing the loop not to terminate. This can result in an infinite loop or reads beyond the allocated pc_data array.
What is the fix?
The fix changes the count loop counter from u8 to u32 so that it matches num_pc and can safely iterate over the advertised number of PC entries.