### [CVE-2025-38153](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-38153)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=5.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=df2d59a2ab6c9ceac2c4104272fce03493b8f62f%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:net: usb: aqc111: fix error handling of usbnet read callsSyzkaller, courtesy of syzbot, identified an error (see report [1]) inaqc111 driver, caused by incomplete sanitation of usb read calls'results. This problem is quite similar to the one fixed in commit920a9fa27e78 ("net: asix: add proper error handling of usb read errors").For instance, usbnet_read_cmd() may read fewer than 'size' bytes,even if the caller expected the full amount, and aqc111_read_cmd()will not check its result properly. As [1] shows, this may leadto MAC address in aqc111_bind() being only partly initialized,triggering KMSAN warnings.Fix the issue by verifying that the number of bytes read isas expected and not less.[1] Partial syzbot report:BUG: KMSAN: uninit-value in is_valid_ether_addr include/linux/etherdevice.h:208 [inline]BUG: KMSAN: uninit-value in usbnet_probe+0x2e57/0x4390 drivers/net/usb/usbnet.c:1830 is_valid_ether_addr include/linux/etherdevice.h:208 [inline] usbnet_probe+0x2e57/0x4390 drivers/net/usb/usbnet.c:1830 usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x4d1/0xd90 drivers/base/dd.c:658 __driver_probe_device+0x268/0x380 drivers/base/dd.c:800...Uninit was stored to memory at: dev_addr_mod+0xb0/0x550 net/core/dev_addr_lists.c:582 __dev_addr_set include/linux/netdevice.h:4874 [inline] eth_hw_addr_set include/linux/etherdevice.h:325 [inline] aqc111_bind+0x35f/0x1150 drivers/net/usb/aqc111.c:717 usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772 usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396...Uninit was stored to memory at: ether_addr_copy include/linux/etherdevice.h:305 [inline] aqc111_read_perm_mac drivers/net/usb/aqc111.c:663 [inline] aqc111_bind+0x794/0x1150 drivers/net/usb/aqc111.c:713 usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772 usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline]...Local variable buf.i created at: aqc111_read_perm_mac drivers/net/usb/aqc111.c:656 [inline] aqc111_bind+0x221/0x1150 drivers/net/usb/aqc111.c:713 usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security