CVE-2025-38464

一、漏洞信息
 漏洞编号：[CVE-2025-38464](https://nvd.nist.gov/vuln/detail/CVE-2025-38464)
 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 V3.0分值：
  BaseScore：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, a use-after-free vulnerability exists in the tipc_conn_close() function. When netns is being dismantled, tipc_topsrv_stop() iterates over tipc_net(net)->topsrv->conn_idr and calls tipc_conn_close() for each tipc_conn. The issue arises because tipc_conn_close() is called after releasing the IDR lock. At the same time, tipc_conn_recv_work() might be running and could call tipc_conn_close() for the same tipc_conn, releasing its last ->kref. Once the IDR lock is released in tipc_topsrv_stop(), there is no guarantee that the tipc_conn remains alive.
 漏洞公开时间：2025-07-26 00:15:32
 漏洞创建时间：2025-07-26 00:32:09
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-38464
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://lore.kernel.org/linux-cve-announce/2025072508-CVE-2025-38464-44a1@gregkh/T/#u |  |
|  | https://security-tracker.debian.org/tracker/CVE-2025-38464 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-38464 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38464 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025072508-CVE-2025-38464-44a1@gregkh/T |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2383509 |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |
|  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  |
|  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  |
|  | https://errata.almalinux.org/8/ALSA-2025-15009.html |  |
|  | https://access.redhat.com/security/cve/CVE-2025-38464 |  |
|  | https://access.redhat.com/errata/RHSA-2025:15009 |  |
|  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  |
|  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  |
|  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  |
|  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  |
|  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  |
|  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  |

</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:
  七彩瞬析开源风险感知平台
 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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://github.com/gregkh/linux/commit/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a.patch |  | ljqc |
|  |  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  | nvd |
|  |  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  | nvd |
|  |  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  | nvd |
|  |  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  | nvd |
|  |  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  | nvd |
|  |  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  | nvd |
|  |  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  | nvd |
|  |  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  | nvd |
|  |  | https://git.kernel.org/stable/c/03dcdd2558e1e55bf843822fe4363dcb48743f2b |  | snyk |
|  |  | https://git.kernel.org/stable/c/15a6f4971e2f157d57e09ea748d1fbc714277aa4 |  | snyk |
|  |  | https://git.kernel.org/stable/c/1dbf7cd2454a28b1da700085b99346b5445aeabb |  | snyk |
|  |  | https://git.kernel.org/stable/c/3b89e17b2fd64012682bed158d9eb3d2e96dec42 |  | snyk |
|  |  | https://git.kernel.org/stable/c/50aa2d121bc2cfe2d825f8a331ea75dfaaab6a50 |  | snyk |
|  |  | https://git.kernel.org/stable/c/667eeab4999e981c96b447a4df5f20bdf5c26f13 |  | snyk |
|  |  | https://git.kernel.org/stable/c/be4b8392da7978294f2f368799d29dd509fb6c4d |  | snyk |
|  |  | https://git.kernel.org/stable/c/dab8ded2e5ff41012a6ff400b44dbe76ccf3592a |  | snyk |

</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:tipc: Fix use-after-free in tipc_conn_close().syzbot reported a null-ptr-deref in tipc_conn_close() during netnsdismantle. [0]tipc_topsrv_stop() iterates tipc_net(net)-&gt;topsrv-&gt;conn_idr and callstipc_conn_close() for each tipc_conn.The problem is that tipc_conn_close() is called after releasing theIDR lock.At the same time, there might be tipc_conn_recv_work() running and itcould call tipc_conn_close() for the same tipc_conn and release itslast -&gt;kref.Once we release the IDR lock in tipc_topsrv_stop(), there is noguarantee that the tipc_conn is alive.Let&#39;s hold the ref before releasing the lock and put the ref aftertipc_conn_close() in tipc_topsrv_stop().[0]:BUG: KASAN: use-after-free in tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165Read of size 8 at addr ffff888099305a08 by task kworker/u4:3/435CPU: 0 PID: 435 Comm: kworker/u4:3 Not tainted 4.19.204-syzkaller #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011Workqueue: netns cleanup_netCall Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 tipc_conn_close+0x122/0x140 net/tipc/topsrv.c:165 tipc_topsrv_stop net/tipc/topsrv.c:701 [inline] tipc_topsrv_exit_net+0x27b/0x5c0 net/tipc/topsrv.c:722 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415Allocated by task 23: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192 tipc_topsrv_accept+0x1b5/0x280 net/tipc/topsrv.c:470 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415Freed by task 23: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 tipc_conn_kref_release net/tipc/topsrv.c:150 [inline] kref_put include/linux/kref.h:70 [inline] conn_put+0x2cd/0x3a0 net/tipc/topsrv.c:155 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415The buggy address belongs to the object at ffff888099305a00 which belongs to the cache kmalloc-512 of size 512The buggy address is located 8 bytes inside of 512-byte region [ffff888099305a00, ffff888099305c00)The buggy address belongs to the page:page:ffffea000264c140 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0flags: 0xfff00000000100(slab)raw: 00fff00000000100 ffffea00028b6b88 ffffea0002cd2b08 ffff88813bff0940raw: 0000000000000000 ffff888099305000 0000000100000006 0000000000000000page dumped because: kasan: bad access detectedMemory state around the buggy address: ffff888099305900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc<spanclass= q >&gt;ffff888099305a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb</span>                      ^ ffff888099305a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888099305b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fbThe Linux kernel CVE team has assigned CVE-2025-38464 to this issue.
 openEuler评分：
  8.0
 Vector：CVSS：3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4(4.19.90):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(6.6.0):受影响
5.openEuler-24.03-LTS-SP1(6.6.0):受影响
6.openEuler-24.03-LTS-SP2(6.6.0):受影响
7.master:不受影响
8.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.master:否
2.openEuler-20.03-LTS-SP4(4.19.90):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(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否
8.openEuler-24.03-LTS-SP2(6.6.0):否

原因说明：
  1.openEuler-20.03-LTS-SP4(4.19.90):正常修复
2.openEuler-22.03-LTS-SP3(5.10.0):正常修复
3.openEuler-22.03-LTS-SP4(5.10.0):正常修复
4.openEuler-24.03-LTS(6.6.0):正常修复
5.openEuler-24.03-LTS-SP1(6.6.0):正常修复
6.openEuler-24.03-LTS-SP2(6.6.0):正常修复
7.master:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发

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