CVE-2025-23143

一、漏洞信息
 漏洞编号：[CVE-2025-23143](https://nvd.nist.gov/vuln/detail/CVE-2025-23143)
 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: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod.When I ran the repro [0] and waited a few seconds, I observed twoLOCKDEP splats: a warning immediately followed by a null-ptr-deref. [1]Reproduction Steps:  1) Mount CIFS  2) Add an iptables rule to drop incoming FIN packets for CIFS  3) Unmount CIFS  4) Unload the CIFS module  5) Remove the iptables ruleAt step 3), the CIFS module calls sock_release() for the underlyingTCP socket, and it returns quickly.  However, the socket remains inFIN_WAIT_1 because incoming FIN packets are dropped.At this point, the module s refcnt is 0 while the socket is stillalive, so the following rmmod command succeeds.  # ss -tan  State      Recv-Q Send-Q Local Address:Port  Peer Address:Port  FIN-WAIT-1 0      477        10.0.2.15:51062   10.0.0.137:445  # lsmod | grep cifs  cifs                 1159168  0This highlights a discrepancy between the lifetime of the CIFS moduleand the underlying TCP socket.  Even after CIFS calls sock_release()and it returns, the TCP socket does not die immediately in order toclose the connection gracefully.While this is generally fine, it causes an issue with LOCKDEP becauseCIFS assigns a different lock class to the TCP socket s sk->sk_lockusing sock_lock_init_class_and_name().Once an incoming packet is processed for the socket or a timer fires,sk->sk_lock is acquired.Then, LOCKDEP checks the lock context in check_wait_context(), wherehlock_class() is called to retrieve the lock class.  However, sincethe module has already been unloaded, hlock_class() logs a warningand returns NULL, triggering the null-ptr-deref.If LOCKDEP is enabled, we must ensure that a module callingsock_lock_init_class_and_name() (CIFS, NFS, etc) cannot be unloadedwhile such a socket is still alive to prevent this issue.Let s hold the module reference in sock_lock_init_class_and_name()and release it when the socket is freed in sk_prot_free().Note that sock_lock_init() clears sk->sk_owner for svc_create_socket()that calls sock_lock_init_class_and_name() for a listening socket,which clones a socket by sk_clone_lock() without GFP_ZERO.[0]:CIFS_SERVER= 10.0.0.137 CIFS_PATH= //${CIFS_SERVER}/Users/Administrator/Desktop/CIFS_TEST DEV= enp0s3 CRED= /root/WindowsCredential.txt MNT=$(mktemp -d /tmp/XXXXXX)mount -t cifs ${CIFS_PATH} ${MNT} -o vers=3.0,credentials=${CRED},cache=none,echo_interval=1iptables -A INPUT -s ${CIFS_SERVER} -j DROPfor i in $(seq 10);do    umount ${MNT}    rmmod cifs    sleep 1donerm -r ${MNT}iptables -D INPUT -s ${CIFS_SERVER} -j DROP[1]:DEBUG_LOCKS_WARN_ON(1)WARNING: CPU: 10 PID: 0 at kernel/locking/lockdep.c:234 hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223)Modules linked in: cifs_arc4 nls_ucs2_utils cifs_md4 [last unloaded: cifs]CPU: 10 UID: 0 PID: 0 Comm: swapper/10 Not tainted 6.14.0 #36Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014RIP: 0010:hlock_class (kernel/locking/lockdep.c:234 kernel/locking/lockdep.c:223)...Call Trace: <IRQ> __lock_acquire (kernel/locking/lockdep.c:4853 kernel/locking/lockdep.c:5178) lock_acquire (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853 kernel/locking/lockdep.c:5816) _raw_spin_lock_nested (kernel/locking/spinlock.c:379) tcp_v4_rcv (./include/linux/skbuff.h:1678 ./include/net/tcp.h:2547 net/ipv4/tcp_ipv4.c:2350)...BUG: kernel NULL pointer dereference, address: 00000000000000c4 PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present pagePGD 0Oops: Oops: 0000 [#1] PREEMPT SMP NOPTICPU: 10 UID: 0 PID: 0 Comm: swapper/10 Tainted: G        W          6.14.0 #36Tainted: [W]=WARNHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014RIP: 0010:__lock_acquire (kernel/---truncated---
 漏洞公开时间：2025-05-01 21:15:50
 漏洞创建时间：2025-05-01 21:35:51
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-23143
<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/0bb2f7a1ad1f11d861f58e5ee5051c8974ff9569 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/2155802d3313d7b8365935c6b8d6edc0ddd7eb94 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5f7f6abd92b6c8dc8f19625ef93c3a18549ede04 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c11247a21aab4b50a23c8b696727d7483de2f1e1 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-23143 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2025-23143 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://git.kernel.org/stable/c/0bb2f7a1ad1f11d861f58e5ee5051c8974ff9569 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://git.kernel.org/stable/c/2155802d3313d7b8365935c6b8d6edc0ddd7eb94 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://git.kernel.org/stable/c/5f7f6abd92b6c8dc8f19625ef93c3a18549ede04 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://git.kernel.org/stable/c/c11247a21aab4b50a23c8b696727d7483de2f1e1 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-23143.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2363301 | https://bugzilla.suse.com/show_bug.cgi?id=1242572 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2025050125-CVE-2025-23143-6019@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2363301 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2025-23143 |

</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>

无
</details>
 
二、漏洞分析结构反馈
 影响性分析说明：
  
 openEuler评分：
   
 受影响版本排查(受影响/不受影响)：
  1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

修复是否涉及abi变化(是/否)：
  1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

原因说明：
  1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

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