{"cve":"CVE-2025-38153","nvd":{"published":"2025-07-03T09:15:30.230","modified":"2026-06-17T09:16:16.023","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: aqc111: fix error handling of usbnet read calls\n\nSyzkaller, courtesy of syzbot, identified an error (see report [1]) in\naqc111 driver, caused by incomplete sanitation of usb read calls'\nresults. This problem is quite similar to the one fixed in commit\n920a9fa27e78 (\"net: asix: add proper error handling of usb read errors\").\n\nFor instance, usbnet_read_cmd() may read fewer than 'size' bytes,\neven if the caller expected the full amount, and aqc111_read_cmd()\nwill not check its result properly. As [1] shows, this may lead\nto MAC address in aqc111_bind() being only partly initialized,\ntriggering KMSAN warnings.\n\nFix the issue by verifying that the number of bytes read is\nas expected and not less.\n\n[1] Partial syzbot report:\nBUG: KMSAN: uninit-value in is_valid_ether_addr include/linux/etherdevice.h:208 [inline]\nBUG: KMSAN: uninit-value in usbnet_probe+0x2e57/0x4390 drivers/net/usb/usbnet.c:1830\n is_valid_ether_addr include/linux/etherdevice.h:208 [inline]\n usbnet_probe+0x2e57/0x4390 drivers/net/usb/usbnet.c:1830\n usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396\n call_driver_probe drivers/base/dd.c:-1 [inline]\n really_probe+0x4d1/0xd90 drivers/base/dd.c:658\n __driver_probe_device+0x268/0x380 drivers/base/dd.c:800\n...\n\nUninit was stored to memory at:\n dev_addr_mod+0xb0/0x550 net/core/dev_addr_lists.c:582\n __dev_addr_set include/linux/netdevice.h:4874 [inline]\n eth_hw_addr_set include/linux/etherdevice.h:325 [inline]\n aqc111_bind+0x35f/0x1150 drivers/net/usb/aqc111.c:717\n usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772\n usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396\n...\n\nUninit was stored to memory at:\n ether_addr_copy include/linux/etherdevice.h:305 [inline]\n aqc111_read_perm_mac drivers/net/usb/aqc111.c:663 [inline]\n aqc111_bind+0x794/0x1150 drivers/net/usb/aqc111.c:713\n usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772\n usb_probe_interface+0xd01/0x1310 drivers/usb/core/driver.c:396\n call_driver_probe drivers/base/dd.c:-1 [inline]\n...\n\nLocal variable buf.i created at:\n aqc111_read_perm_mac drivers/net/usb/aqc111.c:656 [inline]\n aqc111_bind+0x221/0x1150 drivers/net/usb/aqc111.c:713\n usbnet_probe+0xbe6/0x4390 drivers/net/usb/usbnet.c:1772","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/11273279012c922f37cfb4dd95d142803fc07b98","https://git.kernel.org/stable/c/30a9e834c74e260533b8d0885e3c89f6f32f7993","https://git.kernel.org/stable/c/405b0d610745fb5e84fc2961d9b960abb9f3d107","https://git.kernel.org/stable/c/60790d287c1a1ced3554d4a87c2f27bf299a932a","https://git.kernel.org/stable/c/7c01863b1c47f040d9674171e77789a423b9b128"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:04:28.436527499+00:00"},"epss":{"cve":"CVE-2025-38153","score":0.00197,"percentile":0.09469,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}