CVE-2024-38567

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 usbsubmiturb+0xed6/0x1880 drivers/usb/core/urb.c:504 ... Call Trace: <TASK> carl9170usbsendrxirqurb+0x273/0x340 drivers/net/wireless/ath/carl9170/usb.c:504 carl9170usbinitdevice drivers/net/wireless/ath/carl9170/usb.c:939 [inline] carl9170usbfirmwarefinish drivers/net/wireless/ath/carl9170/usb.c:999 [inline] carl9170usbfirmwarestep2+0x175/0x240 drivers/net/wireless/ath/carl9170/usb.c:1028 requestfirmwareworkfunc+0x130/0x240 drivers/base/firmwareloader/main.c:1107 processonework+0x9bf/0x1710 kernel/workqueue.c:2289 workerthread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 retfromfork+0x1f/0x30 arch/x86/entry/entry64.S:308 </TASK>

[2] Related syzkaller crashes: