CVE-2025-21877

Aliases:UBUNTU-CVE-2025-21877DEBIAN-CVE-2025-21877

Advisory lineage Upstream: 0 Downstream: 62

Downstream

DEBIAN-CVE-2025-21877 DLA-4178-1 DLA-4193-1 DSA-5900-1 SUSE-SU-2025:01919-1 SUSE-SU-2025:01951-1

Modified

Published: 27 Mar 2025, 14:57

Last modified:11 May 2026, 21:08

Vulnerability Summary

Overall Risk (default)

low

22/100

CVSS Score

5.5 MEDIUM

v3.1 (nvd)

EPSS Score

0.21% LOW

0% probability +0.13%

KEV

Not listed

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

Timeline

27 Mar 2025, 14:57

Published

Vulnerability first disclosed

11 May 2026, 21:08

Last Modified

Vulnerability information updated

Description

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: <TASK> 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/0x2070 net/ipv6/ip6_output.c:141 __ip6_finish_output net/ipv6/ip6_output.c:215 [inline] ip6_finish_output+0x3f9/0x1360 net/ipv6/ip6_output.c:226 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:450 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] mld_sendpack+0x9f0/0x11d0 net/ipv6/mcast.c:1819 mld_send_cr net/ipv6/mcast.c:2120 [inline] mld_ifc_work+0x740/0xca0 net/ipv6/mcast.c:2651 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK>

CVSS Metrics

v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.21%• Percentile: 12%

Affected Systems

debian•linux
< 5.10.237-1 | < 6.1.133-1 | < 6.12.19-1 | < 6.12.19-1
debian•linux-6.1
< 6.1.137-1~deb11u1
ubuntu•linux
all | < 5.4.0-216.236 | < 5.15.0-140.150 | < 6.8.0-84.84
ubuntu•linux-allwinner-5.19
all
ubuntu•linux-aws
all | < 5.4.0-1146.156 | < 5.15.0-1084.91 | < 6.8.0-1039.41
ubuntu•linux-aws-5.0
all
ubuntu•linux-aws-5.11
all
ubuntu•linux-aws-5.13
all
ubuntu•linux-aws-5.15
< 5.15.0-1084.91~20.04.1
ubuntu•linux-aws-5.19
all
ubuntu•linux-aws-5.3
all
ubuntu•linux-aws-5.4
< 5.4.0-1146.156~18.04.1
ubuntu•linux-aws-5.8
all
ubuntu•linux-aws-6.2
all
ubuntu•linux-aws-6.5
all
ubuntu•linux-aws-6.8
< 6.8.0-1039.41~22.04.1
ubuntu•linux-aws-fips
all | < 5.4.0-1146.156+fips1 | < 5.15.0-1084.91+fips1 | < 6.8.0-1039.41+fips1
ubuntu•linux-aws-hwe
all
ubuntu•linux-azure
all | all | < 5.4.0-1151.158 | < 5.15.0-1089.98 | < 6.8.0-1038.44
ubuntu•linux-azure-4.15
all
ubuntu•linux-azure-5.11
all
ubuntu•linux-azure-5.13
all
ubuntu•linux-azure-5.15
< 5.15.0-1089.98~20.04.1
ubuntu•linux-azure-5.19
all
ubuntu•linux-azure-5.3
all
ubuntu•linux-azure-5.4
< 5.4.0-1151.158~18.04.1
ubuntu•linux-azure-5.8
all
ubuntu•linux-azure-6.11
< 6.11.0-1015.15~24.04.1
ubuntu•linux-azure-6.2
all
ubuntu•linux-azure-6.5
all
ubuntu•linux-azure-6.8
< 6.8.0-1036.42~22.04.1
ubuntu•linux-azure-edge
all
ubuntu•linux-azure-fde
all | all
ubuntu•linux-azure-fde-5.15
< 5.15.0-1114.123~20.04.1
ubuntu•linux-azure-fde-5.19
all
ubuntu•linux-azure-fde-6.2
all
ubuntu•linux-azure-fips
all | < 5.4.0-1151.158+fips1 | < 5.15.0-1089.98+fips1 | < 6.8.0-1040.46+fips1
ubuntu•linux-azure-nvidia
< 6.8.0-1025.27
ubuntu•linux-bluefield
all | < 5.4.0-1105.112 | < 5.15.0-1066.68
ubuntu•linux-fips
all | < 5.4.0-1120.130 | < 5.15.0-140.150+fips1 | < 6.8.0-84.84+fips1
ubuntu•linux-gcp
all | all | < 5.4.0-1149.158 | < 5.15.0-1083.92 | < 6.8.0-1040.42
ubuntu•linux-gcp-4.15
all
ubuntu•linux-gcp-5.11
all
ubuntu•linux-gcp-5.13
all
ubuntu•linux-gcp-5.15
< 5.15.0-1083.92~20.04.1
ubuntu•linux-gcp-5.19
all
ubuntu•linux-gcp-5.3
all
ubuntu•linux-gcp-5.4
< 5.4.0-1149.158~18.04.1
ubuntu•linux-gcp-5.8
all
ubuntu•linux-gcp-6.11
< 6.11.0-1015.15~24.04.1

Showing first 50 affected entries in server-rendered view.