CVE-2025-38323

一、漏洞信息
 漏洞编号：[CVE-2025-38323](https://nvd.nist.gov/vuln/detail/CVE-2025-38323)
 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, the following vulnerability has been resolved:net: atm: add lec_mutexsyzbot found its way in net/atm/lec.c, and found an error pathin lecd_attach() could leave a dangling pointer in dev_lec[].Add a mutex to protect dev_lecp[] uses from lecd_attach(),lec_vcc_attach() and lec_mcast_attach().Following patch will use this mutex for /proc/net/atm/lec.BUG: KASAN: slab-use-after-free in lecd_attach net/atm/lec.c:751 [inline]BUG: KASAN: slab-use-after-free in lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008Read of size 8 at addr ffff88807c7b8e68 by task syz.1.17/6142CPU: 1 UID: 0 PID: 6142 Comm: syz.1.17 Not tainted 6.16.0-rc1-syzkaller-00239-g08215f5486ec #0 PREEMPT(full)Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025Call Trace: <TASK>  __dump_stack lib/dump_stack.c:94 [inline]  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120  print_address_description mm/kasan/report.c:408 [inline]  print_report+0xcd/0x680 mm/kasan/report.c:521  kasan_report+0xe0/0x110 mm/kasan/report.c:634  lecd_attach net/atm/lec.c:751 [inline]  lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK>Allocated by task 6132:  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47  kasan_save_track+0x14/0x30 mm/kasan/common.c:68  poison_kmalloc_redzone mm/kasan/common.c:377 [inline]  __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394  kasan_kmalloc include/linux/kasan.h:260 [inline]  __do_kmalloc_node mm/slub.c:4328 [inline]  __kvmalloc_node_noprof+0x27b/0x620 mm/slub.c:5015  alloc_netdev_mqs+0xd2/0x1570 net/core/dev.c:11711  lecd_attach net/atm/lec.c:737 [inline]  lane_ioctl+0x17db/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 6132:  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47  kasan_save_track+0x14/0x30 mm/kasan/common.c:68  kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576  poison_slab_object mm/kasan/common.c:247 [inline]  __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264  kasan_slab_free include/linux/kasan.h:233 [inline]  slab_free_hook mm/slub.c:2381 [inline]  slab_free mm/slub.c:4643 [inline]  kfree+0x2b4/0x4d0 mm/slub.c:4842  free_netdev+0x6c5/0x910 net/core/dev.c:11892  lecd_attach net/atm/lec.c:744 [inline]  lane_ioctl+0x1ce8/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893
 漏洞公开时间：2025-07-03 17:15:25
 漏洞创建时间：2025-07-10 18:11:39
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-38323
<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/32aa2fbe319f33b0318ec6f4fceb63879771a286 |  |

</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/e91274cc7ed88ab5bdc62d426067c82b0b118a0b.patch |  | ljqc |
|  |  | https://git.kernel.org/stable/c/32aa2fbe319f33b0318ec6f4fceb63879771a286 |  | nvd |

</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:net: atm: add lec_mutex[ Upstream commit d13a3824bfd2b4774b671a75cf766a16637a0e67 ]syzbot found its way in net/atm/lec.c, and found an error pathin lecd_attach() could leave a dangling pointer in dev_lec[].Add a mutex to protect dev_lecp[] uses from lecd_attach(),lec_vcc_attach() and lec_mcast_attach().Following patch will use this mutex for /proc/net/atm/lec.BUG: KASAN: slab-use-after-free in lecd_attach net/atm/lec.c:751 [inline]BUG: KASAN: slab-use-after-free in lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008Read of size 8 at addr ffff88807c7b8e68 by task syz.1.17/6142CPU: 1 UID: 0 PID: 6142 Comm: syz.1.17 Not tainted 6.16.0-rc1-syzkaller-00239-g08215f5486ec #0 PREEMPT(full)Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025Call Trace: <TASK>  __dump_stack lib/dump_stack.c:94 [inline]  dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120  print_address_description mm/kasan/report.c:408 [inline]  print_report+0xcd/0x680 mm/kasan/report.c:521  kasan_report+0xe0/0x110 mm/kasan/report.c:634  lecd_attach net/atm/lec.c:751 [inline]  lane_ioctl+0x2224/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK>Allocated by task 6132:  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47  kasan_save_track+0x14/0x30 mm/kasan/common.c:68  poison_kmalloc_redzone mm/kasan/common.c:377 [inline]  __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394  kasan_kmalloc include/linux/kasan.h:260 [inline]  __do_kmalloc_node mm/slub.c:4328 [inline]  __kvmalloc_node_noprof+0x27b/0x620 mm/slub.c:5015  alloc_netdev_mqs+0xd2/0x1570 net/core/dev.c:11711  lecd_attach net/atm/lec.c:737 [inline]  lane_ioctl+0x17db/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7fFreed by task 6132:  kasan_save_stack+0x33/0x60 mm/kasan/common.c:47  kasan_save_track+0x14/0x30 mm/kasan/common.c:68  kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576  poison_slab_object mm/kasan/common.c:247 [inline]  __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264  kasan_slab_free include/linux/kasan.h:233 [inline]  slab_free_hook mm/slub.c:2381 [inline]  slab_free mm/slub.c:4643 [inline]  kfree+0x2b4/0x4d0 mm/slub.c:4842  free_netdev+0x6c5/0x910 net/core/dev.c:11892  lecd_attach net/atm/lec.c:744 [inline]  lane_ioctl+0x1ce8/0x23e0 net/atm/lec.c:1008  do_vcc_ioctl+0x12c/0x930 net/atm/ioctl.c:159  sock_do_ioctl+0x118/0x280 net/socket.c:1190  sock_ioctl+0x227/0x6b0 net/socket.c:1311  vfs_ioctl fs/ioctl.c:51 [inline]  __do_sys_ioctl fs/ioctl.c:907 [inline]  __se_sys_ioctl fs/ioctl.c:893 [inline]  __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893Fixes: 1da177e4c3f4 ( Linux-2.6.12-rc2 )The Linux kernel CVE team has assigned CVE-2025-38323 to this issue.
 openEuler评分：
  7.0
 Vector：CVSS：3.0/AV:L/AC:H/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.master(6.12.33):不受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.openEuler-24.03-LTS:不受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:不受影响
8.openEuler-24.03-LTS-SP2: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(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:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否

原因说明：
  1.openEuler-20.03-LTS-SP4(4.19.90):不受影响-组件不存在
2.openEuler-22.03-LTS-SP3(5.10.0):不受影响-组件不存在
3.openEuler-22.03-LTS-SP4(5.10.0):不受影响-组件不存在
4.openEuler-24.03-LTS:不受影响-组件不存在
5.openEuler-24.03-LTS-SP1:不受影响-组件不存在
6.openEuler-24.03-LTS-SP2:不受影响-组件不存在
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

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