CVE-2025-21877

一、漏洞信息
 漏洞编号：[CVE-2025-21877](https://nvd.nist.gov/vuln/detail/CVE-2025-21877)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 CVSS V3.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  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 byinconsistencies between expected and actually present endpointsin gl620a driver. Since genelink_bind() does not properlyverify whether specified eps are in fact provided by the device,in this case, an artificially manufactured one, one may get amismatch.Fix the issue by resorting to a usbnet utility functionusbnet_get_endpoints(), usually reserved for this very problem.Check for endpoints and return early before proceeding further ifany are missing.[1] Syzbot report:usb 5-1: Manufacturer: syzusb 5-1: SerialNumber: syzusb 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 1WARNING: CPU: 2 PID: 1841 at drivers/usb/core/urb.c:503 usb_submit_urb+0xe4b/0x1730 drivers/usb/core/urb.c:503Modules linked in:CPU: 2 UID: 0 PID: 1841 Comm: kworker/2:2 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014Workqueue: mld mld_ifc_workRIP: 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>
 漏洞公开时间：2025-03-27 23:15:55
 漏洞创建时间：2025-03-27 23:48:55
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-21877
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/1cf9631d836b289bd5490776551961c883ae8a4f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/24dd971104057c8828d420a48e0a5af6e6f30d3e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4e8b8d43373bf837be159366f0192502f97ec7a5 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5f2dbabbce04b1ffcd6d8d07564adb94db577536 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/67ebc3391c8377738e97a43374054d9718fdb6e4 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/9bcb8cbc3e5d67eb223bfb7e2291a270dbb699dc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a2ee5e55b50a97d13617c8653482c0ad4decff8c |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ded25730c96949cb8b048b29c557e38569124943 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21877 | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21877.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/5f2dbabbce04b1ffcd6d8d07564adb94db577536 | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/24dd971104057c8828d420a48e0a5af6e6f30d3e | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/9bcb8cbc3e5d67eb223bfb7e2291a270dbb699dc | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/67ebc3391c8377738e97a43374054d9718fdb6e4 | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/a2ee5e55b50a97d13617c8653482c0ad4decff8c | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/4e8b8d43373bf837be159366f0192502f97ec7a5 | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/ded25730c96949cb8b048b29c557e38569124943 | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| suse_bugzilla | https://git.kernel.org/stable/c/1cf9631d836b289bd5490776551961c883ae8a4f | https://bugzilla.suse.com/show_bug.cgi?id=1240172 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2025-21877 |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| linux_kernel | 5.4.291 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5f2dbabbce04b1ffcd6d8d07564adb94db577536Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 5.10.235 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=24dd971104057c8828d420a48e0a5af6e6f30d3eIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 5.15.179 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9bcb8cbc3e5d67eb223bfb7e2291a270dbb699dcIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 6.1.130 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=67ebc3391c8377738e97a43374054d9718fdb6e4Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 6.6.81 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a2ee5e55b50a97d13617c8653482c0ad4decff8cIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 6.12.18 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4e8b8d43373bf837be159366f0192502f97ec7a5Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 6.13.6 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ded25730c96949cb8b048b29c557e38569124943Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |
| linux_kernel | 6.14 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=47ee3051c856cc2aa95d35d577a8cb37279d540f | linuxkernelcves |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  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 byinconsistencies between expected and actually present endpointsin gl620a driver. Since genelink_bind() does not properlyverify whether specified eps are in fact provided by the device,in this case, an artificially manufactured one, one may get amismatch.Fix the issue by resorting to a usbnet utility functionusbnet_get_endpoints(), usually reserved for this very problem.Check for endpoints and return early before proceeding further ifany are missing.[1] Syzbot report:usb 5-1: Manufacturer: syzusb 5-1: SerialNumber: syzusb 5-1: config 0 descriptor??gl620a 5-1:0.23 usb0: register &#39;gl620a&#39; at usb-dummy_hcd.0-1, ...------------[ cut here ]------------usb 5-1: BOGUS urb xfer, pipe 3 != type 1WARNING: CPU: 2 PID: 1841 at drivers/usb/core/urb.c:503 usb_submit_urb+0xe4b/0x1730 drivers/usb/core/urb.c:503Modules linked in:CPU: 2 UID: 0 PID: 1841 Comm: kworker/2:2 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014Workqueue: mld mld_ifc_workRIP: 0010:usb_submit_urb+0xe4b/0x1730 drivers/usb/core/urb.c:503...Call Trace: &lt;TASK&gt; 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 &lt;/TASK&gt;The Linux kernel CVE team has assigned CVE-2025-21877 to this issue.
 openEuler评分：
  5.5
 Vector：CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4:受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS:受影响
5.openEuler-24.03-LTS-SP1:受影响
6.openEuler-24.03-LTS-SP2:不受影响
7.master(6.12.33):不受影响
8.openEuler-24.03-LTS-Next:不受影响
9.openEuler-24.03-LTS-SP3:不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否
9.openEuler-24.03-LTS-SP3:否

原因说明：
  1.openEuler-22.03-LTS-SP3(5.10.0):正常修复
2.openEuler-22.03-LTS-SP4(5.10.0):正常修复
3.openEuler-24.03-LTS:正常修复
4.openEuler-24.03-LTS-SP1:正常修复
5.openEuler-24.03-LTS-SP2:不受影响-漏洞代码不能被攻击者触发
6.openEuler-20.03-LTS-SP4:不修复-超出修复范围
7.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
9.openEuler-24.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发

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