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PUBLISHED

CVE-2024-26801

Bluetooth: Avoid potential use-after-free in hci_error_reset

Reserved:2024-02-19
Published:2024-04-04
Updated:2024-04-04

Description

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.

Product status

Default status
unaffected

c7741d16a57c before e0b278650f07
affected

c7741d16a57c before 98fb98fd37e4
affected

c7741d16a57c before 6dd0a9dfa99f
affected

c7741d16a57c before da4569d450b1
affected

c7741d16a57c before 45085686b955
affected

c7741d16a57c before 2ab9a19d896f
affected

c7741d16a57c before dd594cdc24f2
affected

c7741d16a57c before 2449007d3f73
affected

Default status
affected

4.0
affected

Any version before 4.0
unaffected

4.19.309
unaffected

5.4.271
unaffected

5.10.212
unaffected

5.15.151
unaffected

6.1.81
unaffected

6.6.21
unaffected

6.7.9
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/e0b278650f07acf2e0932149183458468a731c03

https://git.kernel.org/stable/c/98fb98fd37e42fd4ce13ff657ea64503e24b6090

https://git.kernel.org/stable/c/6dd0a9dfa99f8990a08eb8fdd8e79bee31c7d8e2

https://git.kernel.org/stable/c/da4569d450b193e39e87119fd316c0291b585d14

https://git.kernel.org/stable/c/45085686b9559bfbe3a4f41d3d695a520668f5e1

https://git.kernel.org/stable/c/2ab9a19d896f5a0dd386e1f001c5309bc35f433b

https://git.kernel.org/stable/c/dd594cdc24f2e48dab441732e6dfcafd6b0711d1

https://git.kernel.org/stable/c/2449007d3f73b2842c9734f45f0aadb522daf592

cve.org CVE-2024-26801

nvd.nist.gov CVE-2024-26801

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