CVE-2025-21865— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在删除网络命名空间时多次调用dellink，可能导致列表损坏。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 24
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c986380c1d5274c4d5e935addc807d6791cc23eb< 7f86fb07db65a470d0c11f79da551bd9466357dc |
affected |
5f1678346109ff3a6d229d33437fcba3cce9209d< 33eb925c0c26e86ca540a08254806512bf911f22 |
affected | ||
036f8d814a2cd11ee8ef62b8f3e7ce5dec0ee4f3< cb15bb1bde0ba97cbbed9508e45210dcafec3657 |
affected | ||
efec287cbac92ac6ee8312a89221854760e13b34< b70fa591b066d52b141fc430ffdee35b6cc87a66 |
affected | ||
bb11f992f5a475bc68ef959f17a55306f0328495< 9d03e7e37187ae140e716377599493987fb20c5b |
affected | ||
86f73d4ab2f27deeff22ba9336ad103d94f12ac7< ff81b14010362f6188ca26fec22ff05e4da45595 |
affected | ||
eb28fd76c0a08a47b470677c6cef9dd1c60e92d1< 37e7644b961600ef0beb01d3970c3034a62913af |
affected | ||
eb28fd76c0a08a47b470677c6cef9dd1c60e92d1< 4ccacf86491d33d2486b62d4d44864d7101b299d |
affected | ||
| … +16 条更多 | |||
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一、 漏洞 CVE-2025-21865 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
gtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl().
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
gtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl().
Brad Spengler reported the list_del() corruption splat in
gtp_net_exit_batch_rtnl(). [0]
Commit eb28fd76c0a0 ("gtp: Destroy device along with udp socket's netns
dismantle.") added the for_each_netdev() loop in gtp_net_exit_batch_rtnl()
to destroy devices in each netns as done in geneve and ip tunnels.
However, this could trigger ->dellink() twice for the same device during
->exit_batch_rtnl().
Say we have two netns A & B and gtp device B that resides in netns B but
whose UDP socket is in netns A.
1. cleanup_net() processes netns A and then B.
2. gtp_net_exit_batch_rtnl() finds the device B while iterating
netns A's gn->gtp_dev_list and calls ->dellink().
[ device B is not yet unlinked from netns B
as unregister_netdevice_many() has not been called. ]
3. gtp_net_exit_batch_rtnl() finds the device B while iterating
netns B's for_each_netdev() and calls ->dellink().
gtp_dellink() cleans up the device's hash table, unlinks the dev from
gn->gtp_dev_list, and calls unregister_netdevice_queue().
Basically, calling gtp_dellink() multiple times is fine unless
CONFIG_DEBUG_LIST is enabled.
Let's remove for_each_netdev() in gtp_net_exit_batch_rtnl() and
delegate the destruction to default_device_exit_batch() as done
in bareudp.
[0]:
list_del corruption, ffff8880aaa62c00->next (autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc00/0x1000 [slab object]) is LIST_POISON1 (ffffffffffffff02) (prev is 0xffffffffffffff04)
kernel BUG at lib/list_debug.c:58!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 UID: 0 PID: 1804 Comm: kworker/u8:7 Tainted: G T 6.12.13-grsec-full-20250211091339 #1
Tainted: [T]=RANDSTRUCT
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:[<ffffffff84947381>] __list_del_entry_valid_or_report+0x141/0x200 lib/list_debug.c:58
Code: c2 76 91 31 c0 e8 9f b1 f7 fc 0f 0b 4d 89 f0 48 c7 c1 02 ff ff ff 48 89 ea 48 89 ee 48 c7 c7 e0 c2 76 91 31 c0 e8 7f b1 f7 fc <0f> 0b 4d 89 e8 48 c7 c1 04 ff ff ff 48 89 ea 48 89 ee 48 c7 c7 60
RSP: 0018:fffffe8040b4fbd0 EFLAGS: 00010283
RAX: 00000000000000cc RBX: dffffc0000000000 RCX: ffffffff818c4054
RDX: ffffffff84947381 RSI: ffffffff818d1512 RDI: 0000000000000000
RBP: ffff8880aaa62c00 R08: 0000000000000001 R09: fffffbd008169f32
R10: fffffe8040b4f997 R11: 0000000000000001 R12: a1988d84f24943e4
R13: ffffffffffffff02 R14: ffffffffffffff04 R15: ffff8880aaa62c08
RBX: kasan shadow of 0x0
RCX: __wake_up_klogd.part.0+0x74/0xe0 kernel/printk/printk.c:4554
RDX: __list_del_entry_valid_or_report+0x141/0x200 lib/list_debug.c:58
RSI: vprintk+0x72/0x100 kernel/printk/printk_safe.c:71
RBP: autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc00/0x1000 [slab object]
RSP: process kstack fffffe8040b4fbd0+0x7bd0/0x8000 [kworker/u8:7+netns 1804 ]
R09: kasan shadow of process kstack fffffe8040b4f990+0x7990/0x8000 [kworker/u8:7+netns 1804 ]
R10: process kstack fffffe8040b4f997+0x7997/0x8000 [kworker/u8:7+netns 1804 ]
R15: autoslab_size_M_dev_P_net_core_dev_11127_8_1328_8_S_4096_A_64_n_139+0xc08/0x1000 [slab object]
FS: 0000000000000000(0000) GS:ffff888116000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000748f5372c000 CR3: 0000000015408000 CR4: 00000000003406f0 shadow CR4: 00000000003406f0
Stack:
0000000000000000 ffffffff8a0c35e7 ffffffff8a0c3603 ffff8880aaa62c00
ffff8880aaa62c00 0000000000000004 ffff88811145311c 0000000000000005
0000000000000001 ffff8880aaa62000 fffffe8040b4fd40 ffffffff8a0c360d
Call Trace:
<TASK>
[<ffffffff8a0c360d>] __list_del_entry_valid include/linux/list.h:131 [inline] fffffe8040b4fc28
[<ffffffff8a0c360d>] __list_del_entry include/linux/list.h:248 [inline] fffffe8040b4fc28
[<ffffffff8a0c360d>] list_del include/linux/list.h:262 [inl
---truncated---
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在删除网络命名空间时多次调用dellink，可能导致列表损坏。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2025-21865 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2025-21865 其他参考 (8)
同批安全公告 · Linux · 2025-03-12 · 共 26 条
| CVE-2024-58087 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-21850 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-21855 | 8.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21864 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-58089 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21858 | 7.8 HIGH | Linux kernel 资源管理错误漏洞 |
| CVE-2025-21851 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21844 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21853 | Linux kernel 安全漏洞 | |
| CVE-2024-58088 | Linux kernel 安全漏洞 | |
| CVE-2025-21845 | Linux kernel 安全漏洞 | |
| CVE-2025-21846 | Linux kernel 安全漏洞 | |
| CVE-2025-21848 | Linux kernel 安全漏洞 | |
| CVE-2025-21847 | Linux kernel 安全漏洞 | |
| CVE-2025-21849 | Linux kernel 安全漏洞 | |
| CVE-2025-21852 | Linux kernel 安全漏洞 | |
| CVE-2025-21866 | Linux kernel 安全漏洞 | |
| CVE-2025-21854 | Linux kernel 安全漏洞 | |
| CVE-2025-21856 | Linux kernel 安全漏洞 | |
| CVE-2025-21857 | Linux kernel 安全漏洞 |
显示前 20 条，共 26 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-21865
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