CVE-2025-21684— 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irq_chip函数可能被调用的原始spinlock环境中，未使用原始spinlock进行内部锁定。
可能的 ATT&CK 技术 1 AI
T1496 · Resource Hijacking影响版本矩阵 12
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | a32c7caea292c4d1e417eae6e5a348d187546acf< d25041d4a3b2af64c888cf762362b2528ba59294 |
affected |
a32c7caea292c4d1e417eae6e5a348d187546acf< f0ed2d0abc021f56fa27dc6d0770535c1851a43b |
affected | ||
a32c7caea292c4d1e417eae6e5a348d187546acf< b0111650ee596219bb5defa0ce1a1308e6e77ccf |
affected | ||
a32c7caea292c4d1e417eae6e5a348d187546acf< 9c035105c5537d2ecad6b9415e9417a1ffbd0a62 |
affected | ||
a32c7caea292c4d1e417eae6e5a348d187546acf< 9860370c2172704b6b4f0075a0c2a29fd84af96a |
affected | ||
5.12 |
affected | ||
< 5.12 |
unaffected | ||
5.15.179≤ 5.15.* |
unaffected | ||
| … +4 条更多 | |||
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一、 漏洞 CVE-2025-21684 基础信息
漏洞信息
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Vulnerability Title
gpio: xilinx: Convert gpio_lock to raw spinlock
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
gpio: xilinx: Convert gpio_lock to raw spinlock
irq_chip functions may be called in raw spinlock context. Therefore, we
must also use a raw spinlock for our own internal locking.
This fixes the following lockdep splat:
[ 5.349336] =============================
[ 5.353349] [ BUG: Invalid wait context ]
[ 5.357361] 6.13.0-rc5+ #69 Tainted: G W
[ 5.363031] -----------------------------
[ 5.367045] kworker/u17:1/44 is trying to lock:
[ 5.371587] ffffff88018b02c0 (&chip->gpio_lock){....}-{3:3}, at: xgpio_irq_unmask (drivers/gpio/gpio-xilinx.c:433 (discriminator 8))
[ 5.380079] other info that might help us debug this:
[ 5.385138] context-{5:5}
[ 5.387762] 5 locks held by kworker/u17:1/44:
[ 5.392123] #0: ffffff8800014958 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3204)
[ 5.402260] #1: ffffffc082fcbdd8 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3205)
[ 5.411528] #2: ffffff880172c900 (&dev->mutex){....}-{4:4}, at: __device_attach (drivers/base/dd.c:1006)
[ 5.419929] #3: ffffff88039c8268 (request_class#2){+.+.}-{4:4}, at: __setup_irq (kernel/irq/internals.h:156 kernel/irq/manage.c:1596)
[ 5.428331] #4: ffffff88039c80c8 (lock_class#2){....}-{2:2}, at: __setup_irq (kernel/irq/manage.c:1614)
[ 5.436472] stack backtrace:
[ 5.439359] CPU: 2 UID: 0 PID: 44 Comm: kworker/u17:1 Tainted: G W 6.13.0-rc5+ #69
[ 5.448690] Tainted: [W]=WARN
[ 5.451656] Hardware name: xlnx,zynqmp (DT)
[ 5.455845] Workqueue: events_unbound deferred_probe_work_func
[ 5.461699] Call trace:
[ 5.464147] show_stack+0x18/0x24 C
[ 5.467821] dump_stack_lvl (lib/dump_stack.c:123)
[ 5.471501] dump_stack (lib/dump_stack.c:130)
[ 5.474824] __lock_acquire (kernel/locking/lockdep.c:4828 kernel/locking/lockdep.c:4898 kernel/locking/lockdep.c:5176)
[ 5.478758] lock_acquire (arch/arm64/include/asm/percpu.h:40 kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851 kernel/locking/lockdep.c:5814)
[ 5.482429] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162)
[ 5.486797] xgpio_irq_unmask (drivers/gpio/gpio-xilinx.c:433 (discriminator 8))
[ 5.490737] irq_enable (kernel/irq/internals.h:236 kernel/irq/chip.c:170 kernel/irq/chip.c:439 kernel/irq/chip.c:432 kernel/irq/chip.c:345)
[ 5.494060] __irq_startup (kernel/irq/internals.h:241 kernel/irq/chip.c:180 kernel/irq/chip.c:250)
[ 5.497645] irq_startup (kernel/irq/chip.c:270)
[ 5.501143] __setup_irq (kernel/irq/manage.c:1807)
[ 5.504728] request_threaded_irq (kernel/irq/manage.c:2208)
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irq_chip函数可能被调用的原始spinlock环境中，未使用原始spinlock进行内部锁定。
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-2025-21684 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2025-21684 补丁与修复 (4)
CVE-2025-21684 其他参考 (1)
同批安全公告 · Linux · 2025-02-09 · 共 3 条
| CVE-2025-21685 | Linux kernel 代码问题漏洞 | |
| CVE-2024-57949 | Linux kernel 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2025-21684
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