CVE-2024-26801

Summary

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

Bluetooth: Avoid potential use-after-free in hci_error_reset

While handling the HCI_EV_HARDWARE_ERROR event, if the underlying BT controller is not responding, the GPIO reset mechanism would free the hci_dev and lead to a use-after-free in hci_error_reset.

Here's the call trace observed on a ChromeOS device with Intel AX201: queue_work_on+0x3e/0x6c __hci_cmd_sync_sk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] ? init_wait_entry+0x31/0x31 __hci_cmd_sync+0x16/0x20 [bluetooth <HASH:3b4a 6>] hci_error_reset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] process_one_work+0x1d8/0x33f worker_thread+0x21b/0x373 kthread+0x13a/0x152 ? pr_cont_work+0x54/0x54 ? kthread_blkcg+0x31/0x31 ret_from_fork+0x1f/0x30

This patch holds the reference count on the hci_dev while processing a HCI_EV_HARDWARE_ERROR event to avoid potential crash.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < e0b278650f07acf2e0932149183458468a731c03affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < 98fb98fd37e42fd4ce13ff657ea64503e24b6090affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < 6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < da4569d450b193e39e87119fd316c0291b585d14affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < 45085686b9559bfbe3a4f41d3d695a520668f5e1affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < 2ab9a19d896f5a0dd386e1f001c5309bc35f433baffected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < dd594cdc24f2e48dab441732e6dfcafd6b0711d1affected
LinuxLinuxc7741d16a57cbf97eebe53f27e8216b1ff20e20c < 2449007d3f73b2842c9734f45f0aadb522daf592affected
LinuxLinux4.0affected
LinuxLinux0 < 4.0unaffected
LinuxLinux4.19.309 <= 4.19.*unaffected
LinuxLinux5.4.271 <= 5.4.*unaffected
LinuxLinux5.10.212 <= 5.10.*unaffected
LinuxLinux5.15.151 <= 5.15.*unaffected
LinuxLinux6.1.81 <= 6.1.*unaffected
LinuxLinux6.6.21 <= 6.6.*unaffected
LinuxLinux6.7.9 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References