CVE-2025-21930 Information

Description

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 iwl_trans_send_cmd+0xba/0xe0 [iwlwifi] Call Trace: ? __warn+0xca/0x1c0 ? iwl_trans_send_cmd+0xba/0xe0 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] iwl_fw_dbg_clear_monitor_buf+0xd7/0x110 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] _iwl_dbgfs_fw_dbg_clear_write+0xe2/0x120 [iwlmvm 0e8adb18cea92d2c341766bcc10b18699290068a]

Ask whether the firmware is alive before sending a command.

Reference

https://git.kernel.org/stable/c/437e93ecd40754f9e938d524daf52a10c589e2d4 https://git.kernel.org/stable/c/d73d2c6e3313f0ba60711ab4f4b9044eddca9ca5 https://git.kernel.org/stable/c/e7c31a3f4f27d61b9ccd894a7bf4690f137da0ec