cbcvebase.
CVE-2025-21877
published 2025-03-27

CVE-2025-21877: In the Linux kernel, the following vulnerability has been resolved: usbnet: gl620a: fix endpoint checking in genelink_bind() Syzbot reports [1] a warning in…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
10.7th percentile
In the Linux kernel, the following vulnerability has been resolved: usbnet: gl620a: fix endpoint checking in genelink_bind() Syzbot reports [1] a warning in usb_submit_urb() triggered by inconsistencies between expected and actually present endpoints in gl620a driver. Since genelink_bind() does not properly verify whether specified eps are in fact provided by the device, in this case, an artificially manufactured one, one may get a mismatch. Fix the issue by resorting to a usbnet utility function usbnet_get_endpoints(), usually reserved for this very problem. Check for endpoints and return early before proceeding further if any are missing. [1] Syzbot report: usb 5-1: Manufacturer: syz usb 5-1: SerialNumber: syz usb 5-1: config 0 descriptor?? gl620a 5-1:0.23 usb0: register 'gl620a' at usb-dummy_hcd.0-1, ... ------------[ cut here ]------------ usb 5-1: BOGUS urb xfer, pipe 3 != type 1 WARNING: CPU: 2 PID: 1841 at drivers/usb/core/urb.c:503 usb_submit_urb+0xe4b/0x1730 drivers/usb/core/urb.c:503 Modules linked in: CPU: 2 UID: 0 PID: 1841 Comm: kworker/2:2 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: mld mld_ifc_work RIP: 0010:usb_submit_urb+0xe4b/0x1730 drivers/usb/core/urb.c:503 ... Call Trace: usbnet_start_xmit+0x6be/0x2780 drivers/net/usb/usbnet.c:1467 __netdev_start_xmit include/linux/netdevice.h:5002 [inline] netdev_start_xmit include/linux/netdevice.h:5011 [inline] xmit_one net/core/dev.c:3590 [inline] dev_hard_start_xmit+0x9a/0x7b0 net/core/dev.c:3606 sch_direct_xmit+0x1ae/0xc30 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3827 [inline] __dev_queue_xmit+0x13d4/0x43e0 net/core/dev.c:4400 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_resolve_output net/core/neighbour.c:1514 [inline] neigh_resolve_output+0x5bc/0x950 net/core/neighbour.c:1494 neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0xb1b/0

Affected

26 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.133-1 (bookworm)linux 6.1.133-1 (bookworm)
debianlinux-6.1< linux 6.1.133-1 (bookworm)linux 6.1.133-1 (bookworm)
linuxlinux
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 5f2dbabbce04b1ffcd6d8d07564adb94db5775365f2dbabbce04b1ffcd6d8d07564adb94db577536
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 24dd971104057c8828d420a48e0a5af6e6f30d3e24dd971104057c8828d420a48e0a5af6e6f30d3e
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 9bcb8cbc3e5d67eb223bfb7e2291a270dbb699dc9bcb8cbc3e5d67eb223bfb7e2291a270dbb699dc
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 67ebc3391c8377738e97a43374054d9718fdb6e467ebc3391c8377738e97a43374054d9718fdb6e4
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < a2ee5e55b50a97d13617c8653482c0ad4decff8ca2ee5e55b50a97d13617c8653482c0ad4decff8c
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 4e8b8d43373bf837be159366f0192502f97ec7a54e8b8d43373bf837be159366f0192502f97ec7a5
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < ded25730c96949cb8b048b29c557e38569124943ded25730c96949cb8b048b29c557e38569124943
linuxlinux>= 47ee3051c856cc2aa95d35d577a8cb37279d540f < 1cf9631d836b289bd5490776551961c883ae8a4f1cf9631d836b289bd5490776551961c883ae8a4f
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.237-15.10.237-1
linuxlinux_kernel>= 0 < 6.1.133-16.1.133-1
linuxlinux_kernel>= 0 < 6.12.19-16.12.19-1
linuxlinux_kernel>= 0 < 6.12.19-16.12.19-1
linuxlinux_kernel>= 0 < 5.4.0-216.2365.4.0-216.236
linuxlinux_kernel>= 0 < 5.15.0-140.1505.15.0-140.150
linuxlinux_kernel>= 0 < 6.8.0-84.846.8.0-84.84
linuxlinux_kernel>= 2.6.14 < 5.4.2915.4.291
linuxlinux_kernel>= 5.11 < 5.15.1795.15.179
linuxlinux_kernel>= 5.16 < 6.1.1306.1.130
linuxlinux_kernel>= 5.5 < 5.10.2355.10.235
linuxlinux_kernel>= 6.13 < 6.13.66.13.6
linuxlinux_kernel>= 6.2 < 6.6.816.6.81

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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