CVE-2025-21878— 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npcm i2c驱动未禁用中断前请求IRQ，可能导致软锁定。
影响版本矩阵 16
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 56a1485b102ed1cd5a4af8e87ed794699fd1cad2< f32d7b4dc6e791523c70e83049645dcba2a2aa33 |
affected |
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< e3aea1dba97d31eceed7b622000af0406988b9c8 |
affected | ||
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< 545b563eb00d0576775da4011b3f7ffefc9e8c60 |
affected | ||
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< 1b267e1b87d52b16e7dfcc7ab2ab760f6f8f9ca9 |
affected | ||
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< 12d0e39916705b68d2d8ba20a8e35d1d27afc260 |
affected | ||
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< 846e371631c57365eeb89e5db1ab0f344169af93 |
affected | ||
56a1485b102ed1cd5a4af8e87ed794699fd1cad2< dd1998e243f5fa25d348a384ba0b6c84d980f2b2 |
affected | ||
5.8 |
affected | ||
| … +8 条更多 | |||
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一、 漏洞 CVE-2025-21878 基础信息
漏洞信息
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Vulnerability Title
i2c: npcm: disable interrupt enable bit before devm_request_irq
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
i2c: npcm: disable interrupt enable bit before devm_request_irq
The customer reports that there is a soft lockup issue related to
the i2c driver. After checking, the i2c module was doing a tx transfer
and the bmc machine reboots in the middle of the i2c transaction, the i2c
module keeps the status without being reset.
Due to such an i2c module status, the i2c irq handler keeps getting
triggered since the i2c irq handler is registered in the kernel booting
process after the bmc machine is doing a warm rebooting.
The continuous triggering is stopped by the soft lockup watchdog timer.
Disable the interrupt enable bit in the i2c module before calling
devm_request_irq to fix this issue since the i2c relative status bit
is read-only.
Here is the soft lockup log.
[ 28.176395] watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [swapper/0:1]
[ 28.183351] Modules linked in:
[ 28.186407] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.120-yocto-s-dirty-bbebc78 #1
[ 28.201174] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 28.208128] pc : __do_softirq+0xb0/0x368
[ 28.212055] lr : __do_softirq+0x70/0x368
[ 28.215972] sp : ffffff8035ebca00
[ 28.219278] x29: ffffff8035ebca00 x28: 0000000000000002 x27: ffffff80071a3780
[ 28.226412] x26: ffffffc008bdc000 x25: ffffffc008bcc640 x24: ffffffc008be50c0
[ 28.233546] x23: ffffffc00800200c x22: 0000000000000000 x21: 000000000000001b
[ 28.240679] x20: 0000000000000000 x19: ffffff80001c3200 x18: ffffffffffffffff
[ 28.247812] x17: ffffffc02d2e0000 x16: ffffff8035eb8b40 x15: 00001e8480000000
[ 28.254945] x14: 02c3647e37dbfcb6 x13: 02c364f2ab14200c x12: 0000000002c364f2
[ 28.262078] x11: 00000000fa83b2da x10: 000000000000b67e x9 : ffffffc008010250
[ 28.269211] x8 : 000000009d983d00 x7 : 7fffffffffffffff x6 : 0000036d74732434
[ 28.276344] x5 : 00ffffffffffffff x4 : 0000000000000015 x3 : 0000000000000198
[ 28.283476] x2 : ffffffc02d2e0000 x1 : 00000000000000e0 x0 : ffffffc008bdcb40
[ 28.290611] Call trace:
[ 28.293052] __do_softirq+0xb0/0x368
[ 28.296625] __irq_exit_rcu+0xe0/0x100
[ 28.300374] irq_exit+0x14/0x20
[ 28.303513] handle_domain_irq+0x68/0x90
[ 28.307440] gic_handle_irq+0x78/0xb0
[ 28.311098] call_on_irq_stack+0x20/0x38
[ 28.315019] do_interrupt_handler+0x54/0x5c
[ 28.319199] el1_interrupt+0x2c/0x4c
[ 28.322777] el1h_64_irq_handler+0x14/0x20
[ 28.326872] el1h_64_irq+0x74/0x78
[ 28.330269] __setup_irq+0x454/0x780
[ 28.333841] request_threaded_irq+0xd0/0x1b4
[ 28.338107] devm_request_threaded_irq+0x84/0x100
[ 28.342809] npcm_i2c_probe_bus+0x188/0x3d0
[ 28.346990] platform_probe+0x6c/0xc4
[ 28.350653] really_probe+0xcc/0x45c
[ 28.354227] __driver_probe_device+0x8c/0x160
[ 28.358578] driver_probe_device+0x44/0xe0
[ 28.362670] __driver_attach+0x124/0x1d0
[ 28.366589] bus_for_each_dev+0x7c/0xe0
[ 28.370426] driver_attach+0x28/0x30
[ 28.373997] bus_add_driver+0x124/0x240
[ 28.377830] driver_register+0x7c/0x124
[ 28.381662] __platform_driver_register+0x2c/0x34
[ 28.386362] npcm_i2c_init+0x3c/0x5c
[ 28.389937] do_one_initcall+0x74/0x230
[ 28.393768] kernel_init_freeable+0x24c/0x2b4
[ 28.398126] kernel_init+0x28/0x130
[ 28.401614] ret_from_fork+0x10/0x20
[ 28.405189] Kernel panic - not syncing: softlockup: hung tasks
[ 28.411011] SMP: stopping secondary CPUs
[ 28.414933] Kernel Offset: disabled
[ 28.418412] CPU features: 0x00000000,00000802
[ 28.427644] Rebooting in 20 seconds..
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npcm i2c驱动未禁用中断前请求IRQ，可能导致软锁定。
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-2025-21878 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2025-21878 补丁与修复 (7)
同批安全公告 · Linux · 2025-03-27 · 共 124 条
| CVE-2023-53006 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-21876 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21890 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21887 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53033 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21889 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52930 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52931 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52934 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52935 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53009 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52999 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52973 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52983 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52981 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52975 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49760 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21867 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52988 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 124 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-21878
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