CVE-2022-48971

Summary

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

Bluetooth: Fix not cleanup led when bt_init fails

bt_init() calls bt_leds_init() to register led, but if it fails later, bt_leds_cleanup() is not called to unregister it.

This can cause panic if the argument "bluetooth-power" in text is freed and then another led_trigger_register() tries to access it:

BUG: unable to handle page fault for address: ffffffffc06d3bc0 RIP: 0010:strcmp+0xc/0x30 Call Trace: <TASK> led_trigger_register+0x10d/0x4f0 led_trigger_register_simple+0x7d/0x100 bt_init+0x39/0xf7 [bluetooth] do_one_initcall+0xd0/0x4e0

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < 8a66c3a94285552f6a8e45d73b34ebbad11d388baffected
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < 2c6cf0afc3856359e620e96edd952457d258e16caffected
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < e7b950458156d410509a08c41930b75e72985938affected
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < edf7284a98296369dd0891a0457eec37df244873affected
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < 5ecf7cd6fde5e72c87122084cf00d63e35d8dd9faffected
LinuxLinuxe64c97b53bc6727aa4385535166aaa047281e02d < 2f3957c7eb4e07df944169a3e50a4d6790e1c744affected
LinuxLinux4.9affected
LinuxLinux0 < 4.9unaffected
LinuxLinux4.19.269 <= 4.19.*unaffected
LinuxLinux5.4.227 <= 5.4.*unaffected
LinuxLinux5.10.159 <= 5.10.*unaffected
LinuxLinux5.15.83 <= 5.15.*unaffected
LinuxLinux6.0.13 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References