CVE-2025-21720

一、漏洞信息
 漏洞编号：[CVE-2025-21720](https://nvd.nist.gov/vuln/detail/CVE-2025-21720)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
 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:xfrm: delete intermediate secpath entry in packet offload modePackets handled by hardware have added secpath as a way to inform XFRMcore code that this path was already handled. That secpath is not neededat all after policy is checked and it is removed later in the stack.However, in the case of IP forwarding is enabled (/proc/sys/net/ipv4/ip_forward),that secpath is not removed and packets which already were handled are reenteredto the driver TX path with xfrm_offload set.The following kernel panic is observed in mlx5 in such case: mlx5_core 0000:04:00.0 enp4s0f0np0: Link up mlx5_core 0000:04:00.1 enp4s0f1np1: Link up Initializing XFRM netlink socket IPsec XFRM device driver BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 0 P4D 0 Oops: Oops: 0010 [#1] PREEMPT SMP CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc1-alex #3 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffb87380003800 EFLAGS: 00010206 RAX: ffff8df004e02600 RBX: ffffb873800038d8 RCX: 00000000ffff98cf RDX: ffff8df00733e108 RSI: ffff8df00521fb80 RDI: ffff8df001661f00 RBP: ffffb87380003850 R08: ffff8df013980000 R09: 0000000000000010 R10: 0000000000000002 R11: 0000000000000002 R12: ffff8df001661f00 R13: ffff8df00521fb80 R14: ffff8df00733e108 R15: ffff8df011faf04e FS:  0000000000000000(0000) GS:ffff8df46b800000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000106384000 CR4: 0000000000350ef0 Call Trace:  <IRQ>  ? show_regs+0x63/0x70  ? __die_body+0x20/0x60  ? __die+0x2b/0x40  ? page_fault_oops+0x15c/0x550  ? do_user_addr_fault+0x3ed/0x870  ? exc_page_fault+0x7f/0x190  ? asm_exc_page_fault+0x27/0x30  mlx5e_ipsec_handle_tx_skb+0xe7/0x2f0 [mlx5_core]  mlx5e_xmit+0x58e/0x1980 [mlx5_core]  ? __fib_lookup+0x6a/0xb0  dev_hard_start_xmit+0x82/0x1d0  sch_direct_xmit+0xfe/0x390  __dev_queue_xmit+0x6d8/0xee0  ? __fib_lookup+0x6a/0xb0  ? internal_add_timer+0x48/0x70  ? mod_timer+0xe2/0x2b0  neigh_resolve_output+0x115/0x1b0  __neigh_update+0x26a/0xc50  neigh_update+0x14/0x20  arp_process+0x2cb/0x8e0  ? __napi_build_skb+0x5e/0x70  arp_rcv+0x11e/0x1c0  ? dev_gro_receive+0x574/0x820  __netif_receive_skb_list_core+0x1cf/0x1f0  netif_receive_skb_list_internal+0x183/0x2a0  napi_complete_done+0x76/0x1c0  mlx5e_napi_poll+0x234/0x7a0 [mlx5_core]  __napi_poll+0x2d/0x1f0  net_rx_action+0x1a6/0x370  ? atomic_notifier_call_chain+0x3b/0x50  ? irq_int_handler+0x15/0x20 [mlx5_core]  handle_softirqs+0xb9/0x2f0  ? handle_irq_event+0x44/0x60  irq_exit_rcu+0xdb/0x100  common_interrupt+0x98/0xc0  </IRQ>  <TASK>  asm_common_interrupt+0x27/0x40 RIP: 0010:pv_native_safe_halt+0xb/0x10 Code: 09 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 22 0f 1f 84 00 00 00 00 00 90 eb 07 0f 00 2d 7f e9 36 00 fb40 00 83 ff 07 77 21 89 ff ff 24 fd 88 3d a1 bd 0f 21 f8 RSP: 0018:ffffffffbe603de8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000f92f46680 RDX: 0000000000000037 RSI: 00000000ffffffff RDI: 00000000000518d4 RBP: ffffffffbe603df0 R08: 000000cd42e4dffb R09: ffffffffbe603d70 R10: 0000004d80d62680 R11: 0000000000000001 R12: ffffffffbe60bf40 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffbe60aff8  ? default_idle+0x9/0x20  arch_cpu_idle+0x9/0x10  default_idle_call+0x29/0xf0  do_idle+0x1f2/0x240  cpu_startup_entry+0x2c/0x30  rest_init+0xe7/0x100  start_kernel+0x76b/0xb90  x86_64_start_reservations+0x18/0x30  x86_64_start_kernel+0xc0/0x110  ? setup_ghcb+0xe/0x130  common_startup_64+0x13e/0x141  </TASK> Modules linked in: esp4_offload esp4 xfrm_interfacexfrm6_tunnel tunnel4 tunnel6 xfrm_user xfrm_algo binf---truncated---
 漏洞公开时间：2025-02-27 10:15:15
 漏洞创建时间：2025-02-27 11:33:06
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-21720
<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/600258d555f0710b9c47fb78d2d80a4aecd608cc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/6945701ca1572f81bc9bb46f624b02eabb3eaf3e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/981ad4c882096e7375b8c2181dd4c3ee58ea5bae |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/c6e1b2cac24b2a4d1dd472071021bf00c26450eb |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21720 | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2025-21720 | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://git.kernel.org/stable/c/600258d555f0710b9c47fb78d2d80a4aecd608cc | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://git.kernel.org/stable/c/6945701ca1572f81bc9bb46f624b02eabb3eaf3e | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://git.kernel.org/stable/c/981ad4c882096e7375b8c2181dd4c3ee58ea5bae | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://git.kernel.org/stable/c/c6e1b2cac24b2a4d1dd472071021bf00c26450eb | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21720.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2348657 | https://bugzilla.suse.com/show_bug.cgi?id=1238859 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2025022647-CVE-2025-21720-063a@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2348657 |

</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 | 6.6.76 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c6e1b2cac24b2a4d1dd472071021bf00c26450ebIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5958372ddf628fe6f4c3e49425734ad32fcfb13c | linuxkernelcves |
| linux_kernel | 6.12.13 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6945701ca1572f81bc9bb46f624b02eabb3eaf3eIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5958372ddf628fe6f4c3e49425734ad32fcfb13c | linuxkernelcves |
| linux_kernel | 6.13.2 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=981ad4c882096e7375b8c2181dd4c3ee58ea5baeIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5958372ddf628fe6f4c3e49425734ad32fcfb13c | linuxkernelcves |
| linux_kernel | 6.14-rc1 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=600258d555f0710b9c47fb78d2d80a4aecd608ccPlease | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5958372ddf628fe6f4c3e49425734ad32fcfb13c | linuxkernelcves |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  Reserved.
 openEuler评分：
  5.5
 Vector：CVSS：3.0/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-24.03-LTS:受影响
2.openEuler-24.03-LTS-SP1:受影响
3.openEuler-20.03-LTS-SP4(4.19.90):不受影响
4.openEuler-22.03-LTS-SP3:不受影响
5.openEuler-22.03-LTS-SP4:不受影响
6.master:不受影响
7.openEuler-24.03-LTS-Next:不受影响

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

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

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1340

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