CVE-2026-98333 PUBLISHED

wifi: mac80211: reset the LED state when ifup fails

Assigner: Linux
Reserved: 25.09.2026 Published: 06.10.2026 Updated: 06.10.2026

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: reset the LED state when ifup fails

When the first interface comes up, the radio LED is turned on. This can start the TPT trigger timer, which continues running.

But if bringing up the interface fails then the timer keeps running and won't be stopped by anything, eventually it can be freed:

ODEBUG: free active (active state 0) object: ffff888127e12130 object type: timer_list hint: tpt_trig_timer+0x0/0x300 net/mac80211/led.c:145 WARNING: CPU: 0 PID: 5923 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129 kfree+0x436/0x670 mm/slub.c:6818 ieee80211_led_exit+0x162/0x1c0 net/mac80211/led.c:210 ieee80211_unregister_hw+0x27e/0x3a0 net/mac80211/main.c:1706 rt2x00lib_remove_dev+0x55b/0x670

Undo the LED state in the error path.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 67408c8c7b9daf28b50e33be3541334c07d15789 to de6f9561db572df86d65c05545eb2397313bb8a5 (excl.)
  • affected from 67408c8c7b9daf28b50e33be3541334c07d15789 to 78183e8331958fda11cd2b6850bb424a9747c4b2 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.38 is affected
  • unaffected from 0 to 2.6.38 (excl.)
  • unaffected from 7.2.8 to 7.2.* (incl.)
  • unaffected from 7.3-rc4 to * (incl.)

References