CVE-2024-38567

EPSS 0.01%
Veröffentlicht 19.06.2024 14:15:16
Zuletzt bearbeitet 04.11.2025 18:16:26
Quelle 416baaa9-dc9f-4396-8d5f-8c081f
CVE-Watchlists
Login
Unerledigt
Login

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

wifi: carl9170: add a proper sanity check for endpoints

Syzkaller reports [1] hitting a warning which is caused by presence
of a wrong endpoint type at the URB sumbitting stage. While there
was a check for a specific 4th endpoint, since it can switch types
between bulk and interrupt, other endpoints are trusted implicitly.
Similar warning is triggered in a couple of other syzbot issues [2].

Fix the issue by doing a comprehensive check of all endpoints
taking into account difference between high- and full-speed
configuration.

[1] Syzkaller report:
...
WARNING: CPU: 0 PID: 4721 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed6/0x1880 drivers/usb/core/urb.c:504
...
Call Trace:
 <TASK>
 carl9170_usb_send_rx_irq_urb+0x273/0x340 drivers/net/wireless/ath/carl9170/usb.c:504
 carl9170_usb_init_device drivers/net/wireless/ath/carl9170/usb.c:939 [inline]
 carl9170_usb_firmware_finish drivers/net/wireless/ath/carl9170/usb.c:999 [inline]
 carl9170_usb_firmware_step2+0x175/0x240 drivers/net/wireless/ath/carl9170/usb.c:1028
 request_firmware_work_func+0x130/0x240 drivers/base/firmware_loader/main.c:1107
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

[2] Related syzkaller crashes: