CVE-2025-21930: wifi: iwlwifi: mvm: don't try to talk to a dead firmware
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: don't try to talk to a dead firmware
This fixes:
bad state = 0 WARNING: CPU: 10 PID: 702 at drivers/net/wireless/inel/iwlwifi/iwl-trans.c:178 iwltranssendcmd+0xba/0xe0 [iwlwifi] Call Trace: <TASK> ? warn+0xca/0x1c0 ? iwltranssendcmd+0xba/0xe0 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] iwlfwdbgclearmonitorbuf+0xd7/0x110 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] iwldbgfsfwdbgclearwrite+0xe2/0x120 [iwlmvm 0e8adb18cea92d2c341766bcc10b18699290068a]
Ask whether the firmware is alive before sending a command.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-21930?
CVE-2025-21930 has been classified as a medium severity vulnerability.
How do I fix CVE-2025-21930?
To fix CVE-2025-21930, update your Linux kernel to the latest version provided by your distribution.
Which software is affected by CVE-2025-21930?
CVE-2025-21930 affects the Linux kernel, specifically the iwlwifi driver.
What type of vulnerability is CVE-2025-21930?
CVE-2025-21930 is a firmware communication issue within the iwlwifi module of the Linux kernel.
When was CVE-2025-21930 resolved?
CVE-2025-21930 was resolved in recent updates to the Linux kernel.