CVE-2024-57889— 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regmap锁定导致原子环境中休眠。
影响版本矩阵 16
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 8f38910ba4f662222157ce07a0d5becc4328c46a< 788d9e9a41b81893d6bb8faa05f045c975278318 |
affected |
8f38910ba4f662222157ce07a0d5becc4328c46a< c55d186376a87b468c9ee30f2195e0f3857f61a0 |
affected | ||
8f38910ba4f662222157ce07a0d5becc4328c46a< 9372e160d8211a7e17f2abff8370794f182df785 |
affected | ||
8f38910ba4f662222157ce07a0d5becc4328c46a< 0310cbad163a908d09d99c26827859365cd71fcb |
affected | ||
8f38910ba4f662222157ce07a0d5becc4328c46a< 8c6fd5803b988a5e78c9b9e42c70a936d7cfc6ec |
affected | ||
8f38910ba4f662222157ce07a0d5becc4328c46a< 830f838589522404cd7c2f0f540602f25034af61 |
affected | ||
8f38910ba4f662222157ce07a0d5becc4328c46a< a37eecb705f33726f1fb7cd2a67e514a15dfe693 |
affected | ||
4.13 |
affected | ||
| … +8 条更多 | |||
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一、 漏洞 CVE-2024-57889 基础信息
漏洞信息
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Vulnerability Title
pinctrl: mcp23s08: Fix sleeping in atomic context due to regmap locking
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
pinctrl: mcp23s08: Fix sleeping in atomic context due to regmap locking
If a device uses MCP23xxx IO expander to receive IRQs, the following
bug can happen:
BUG: sleeping function called from invalid context
at kernel/locking/mutex.c:283
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, ...
preempt_count: 1, expected: 0
...
Call Trace:
...
__might_resched+0x104/0x10e
__might_sleep+0x3e/0x62
mutex_lock+0x20/0x4c
regmap_lock_mutex+0x10/0x18
regmap_update_bits_base+0x2c/0x66
mcp23s08_irq_set_type+0x1ae/0x1d6
__irq_set_trigger+0x56/0x172
__setup_irq+0x1e6/0x646
request_threaded_irq+0xb6/0x160
...
We observed the problem while experimenting with a touchscreen driver which
used MCP23017 IO expander (I2C).
The regmap in the pinctrl-mcp23s08 driver uses a mutex for protection from
concurrent accesses, which is the default for regmaps without .fast_io,
.disable_locking, etc.
mcp23s08_irq_set_type() calls regmap_update_bits_base(), and the latter
locks the mutex.
However, __setup_irq() locks desc->lock spinlock before calling these
functions. As a result, the system tries to lock the mutex whole holding
the spinlock.
It seems, the internal regmap locks are not needed in this driver at all.
mcp->lock seems to protect the regmap from concurrent accesses already,
except, probably, in mcp_pinconf_get/set.
mcp23s08_irq_set_type() and mcp23s08_irq_mask/unmask() are called under
chip_bus_lock(), which calls mcp23s08_irq_bus_lock(). The latter takes
mcp->lock and enables regmap caching, so that the potentially slow I2C
accesses are deferred until chip_bus_unlock().
The accesses to the regmap from mcp23s08_probe_one() do not need additional
locking.
In all remaining places where the regmap is accessed, except
mcp_pinconf_get/set(), the driver already takes mcp->lock.
This patch adds locking in mcp_pinconf_get/set() and disables internal
locking in the regmap config. Among other things, it fixes the sleeping
in atomic context described above.
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regmap锁定导致原子环境中休眠。
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-2024-57889 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-57889 补丁与修复 (7)
同批安全公告 · Linux · 2025-01-15 · 共 32 条
| CVE-2024-57882 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-36476 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-57802 | 9.4 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-21629 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57883 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57857 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57801 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57795 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-39282 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57896 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57893 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57887 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57899 | 7.6 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57902 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57901 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57895 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-57884 | Linux kernel 安全漏洞 | |
| CVE-2024-57844 | Linux kernel 安全漏洞 | |
| CVE-2024-57841 | Linux kernel 安全漏洞 | |
| CVE-2024-57885 | Linux kernel 安全漏洞 |
显示前 20 条，共 32 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-57889
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