CVE-2024-41063

Summary

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

Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

syzbot is reporting that calling hci_release_dev() from hci_error_reset() due to hci_dev_put() from hci_error_reset() can cause deadlock at destroy_workqueue(), for hci_error_reset() is called from hdev->req_workqueue which destroy_workqueue() needs to flush.

We need to make sure that hdev->{rx_work,cmd_work,tx_work} which are queued into hdev->workqueue and hdev->{power_on,error_reset} which are queued into hdev->req_workqueue are no longer running by the moment

   destroy_workqueue(hdev->workqueue);
   destroy_workqueue(hdev->req_workqueue);

are called from hci_release_dev().

Call cancel_work_sync() on these work items from hci_unregister_dev() as soon as hdev->list is removed from hci_dev_list.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe0b278650f07acf2e0932149183458468a731c03 < 48542881997e17b49dc16b93fe910e0cfcf7a9f9affected
LinuxLinux98fb98fd37e42fd4ce13ff657ea64503e24b6090 < 9cfc84b1d464cc024286f42a090718f9067b80edaffected
LinuxLinux6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2 < ddeda6ca5f218b668b560d90fc31ae469adbfd92affected
LinuxLinuxda4569d450b193e39e87119fd316c0291b585d14 < d2ce562a5aff1dcd0c50d9808ea825ef90da909faffected
LinuxLinux45085686b9559bfbe3a4f41d3d695a520668f5e1 < 96600c2e5ee8213dbab5df1617293d8e847bb4faaffected
LinuxLinux2ab9a19d896f5a0dd386e1f001c5309bc35f433b < d6cbce18370641a21dd889e8613d8153df15eb39affected
LinuxLinux2449007d3f73b2842c9734f45f0aadb522daf592 < 3f939bd73fed12dddc2a32a76116c19ca47c7678affected
LinuxLinux2449007d3f73b2842c9734f45f0aadb522daf592 < 0d151a103775dd9645c78c97f77d6e2a5298d913affected
LinuxLinuxdd594cdc24f2e48dab441732e6dfcafd6b0711d1affected
LinuxLinux4.19.309 < 4.19.319affected
LinuxLinux5.4.271 < 5.4.281affected
LinuxLinux5.10.212 < 5.10.223affected
LinuxLinux5.15.151 < 5.15.164affected
LinuxLinux6.1.81 < 6.1.101affected
LinuxLinux6.6.21 < 6.6.42affected
LinuxLinux6.7.9 < 6.8affected
LinuxLinux6.8affected
LinuxLinux0 < 6.8unaffected
LinuxLinux4.19.319 <= 4.19.*unaffected
LinuxLinux5.4.281 <= 5.4.*unaffected
LinuxLinux5.10.223 <= 5.10.*unaffected
LinuxLinux5.15.164 <= 5.15.*unaffected
LinuxLinux6.1.101 <= 6.1.*unaffected
LinuxLinux6.6.42 <= 6.6.*unaffected
LinuxLinux6.9.11 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References