wifi: ar5523: enable proper endpoint verification

Summary

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/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e8/0x2a0 drivers/base/bus.c:487 device_add+0xbd9/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x101d/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xbe/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e8/0x2a0 drivers/base/bus.c:487 device_add+0xbd9/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5353 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x26cb/0x45d0 drivers/usb/core/hub.c:5735 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:306 </TASK>

Timeline

1. Jun 19, 2024, 1:35 PM UTCCVE published
2. Jun 24, 2024, 3:24 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 15, 2026, 12:43 AM UTCRecord last updated

Affected versions

• Linux Linux

  From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in 79ddf5f2020fd593d50f1363bb5131283d74f78f; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in 68a5a00c5d38978a3f8460c6f182f7beec8688ff; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in ee25389df80138907bc9dcdf4a2be2067cde9a81; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in b4c24de37a6bb383394a6fef2b85a6db41d426f5; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in 34f7ebff1b9699e0b89fa58b693bc098c2f5ec72; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in b33a81e4ecfb022b028cae37d1c1ce28ac1b359d; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in beeed260b92af158592f5e8d2dab65dae45c6f70; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in 7bbf76c9bb2c58375e183074e44f9712483f0603; From b7d572e1871df06a96a1c9591c71c5494ff6b624 · fixed in e120b6388d7d88635d67dcae6483f39c37111850

• Linux Linux

  3.8

• KernelLinux

  From 3.8.0 · fixed in 4.19.316; From 4.20.0 · fixed in 5.4.278; From 5.5.0 · fixed in 5.10.219; From 5.11.0 · fixed in 5.15.161; From 5.16.0 · fixed in 6.1.93; From 6.2.0 · fixed in 6.6.33; From 6.7.0 · fixed in 6.8.12; From 6.9.0 · fixed in 6.9.3

References 9