{"id":"DEBIAN-CVE-2025-38153","details":"In the Linux kernel, the following vulnerability has been resolved:  net: usb: aqc111: fix error handling of usbnet read calls  Syzkaller, courtesy of syzbot, identified an error (see report [1]) in aqc111 driver, caused by incomplete sanitation of usb read calls' results. This problem is quite similar to the one fixed in commit 920a9fa27e78 (\"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 lead to MAC address in aqc111_bind() being only partly initialized, triggering KMSAN warnings.  Fix the issue by verifying that the number of bytes read is as 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","modified":"2026-09-01T16:06:13.896173038Z","published":"2025-07-03T09:15:30.230Z","upstream":["CVE-2025-38153"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38153"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.147-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38153.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38153.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38153.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}