CVE-2024-38565

/// Technical description

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

wifi: ar5523: enable proper endpoint verification

Syzkaller reports [1] hitting a warning about an endpoint in use

not having an expected type to it.

Fix the issue by checking for the existence of all proper

endpoints with their according types intact.

Sadly, this patch has not been tested on real hardware.

[1] Syzkaller report:

------------[ cut here ]------------

usb 1-1: BOGUS urb xfer, pipe 3 != type 1

WARNING: CPU: 0 PID: 3643 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed6/0x1880 drivers/usb/core/urb.c:504

...

Call Trace:

<TASK>

ar5523_cmd+0x41b/0x780 drivers/net/wireless/ath/ar5523/ar5523.c:275

ar5523_cmd_read drivers/net/wireless/ath/ar5523/ar5523.c:302 [inline]

ar5523_host_available drivers/net/wireless/ath/ar5523/ar5523.c:1376 [inline]

ar5523_probe+0x14b0/0x1d10 drivers/net/wireless/ath/ar5523/ar5523.c:1655

usb_probe_interface+0x30f/0x7f0 drivers/usb/core/driver.c:396

call_driver_probe drivers/

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References