CVE-2025-68257— 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comedi中兼容ioctl未检查设备连接状态。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 3fbfd2223a271426509830e6340c386a1054cfad< 4836ba483a22ebd076c8faaf8293a7295fad4142 |
affected |
3fbfd2223a271426509830e6340c386a1054cfad< 7141915bf0c41cb57d83cdbaf695b8c731b16b71 |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< f13895c03620933a58907e3250016f087e39b78c |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< b975f91de5f8f63cf490f0393775cc795f8b0557 |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< f6e629dfe6f590091c662a87c9fcf118b1c1c7dc |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< 573b07d2e3d473ee7eb625ef87519922cf01168d |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< aac80e912de306815297a3b74f0426873ffa7dc3 |
affected | ||
3fbfd2223a271426509830e6340c386a1054cfad< 0de7d9cd07a2671fa6089173bccc0b2afe6b93ee |
affected | ||
| … +10 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2025-68257 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！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
comedi: check device's attached status in compat ioctls
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
comedi: check device's attached status in compat ioctls
Syzbot identified an issue [1] that crashes kernel, seemingly due to
unexistent callback dev->get_valid_routes(). By all means, this should
not occur as said callback must always be set to
get_zero_valid_routes() in __comedi_device_postconfig().
As the crash seems to appear exclusively in i386 kernels, at least,
judging from [1] reports, the blame lies with compat versions
of standard IOCTL handlers. Several of them are modified and
do not use comedi_unlocked_ioctl(). While functionality of these
ioctls essentially copy their original versions, they do not
have required sanity check for device's attached status. This,
in turn, leads to a possibility of calling select IOCTLs on a
device that has not been properly setup, even via COMEDI_DEVCONFIG.
Doing so on unconfigured devices means that several crucial steps
are missed, for instance, specifying dev->get_valid_routes()
callback.
Fix this somewhat crudely by ensuring device's attached status before
performing any ioctls, improving logic consistency between modern
and compat functions.
[1] Syzbot report:
BUG: kernel NULL pointer dereference, address: 0000000000000000
...
CR2: ffffffffffffffd6 CR3: 000000006c717000 CR4: 0000000000352ef0
Call Trace:
<TASK>
get_valid_routes drivers/comedi/comedi_fops.c:1322 [inline]
parse_insn+0x78c/0x1970 drivers/comedi/comedi_fops.c:1401
do_insnlist_ioctl+0x272/0x700 drivers/comedi/comedi_fops.c:1594
compat_insnlist drivers/comedi/comedi_fops.c:3208 [inline]
comedi_compat_ioctl+0x810/0x990 drivers/comedi/comedi_fops.c:3273
__do_compat_sys_ioctl fs/ioctl.c:695 [inline]
__se_compat_sys_ioctl fs/ioctl.c:638 [inline]
__ia32_compat_sys_ioctl+0x242/0x370 fs/ioctl.c:638
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
...
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comedi中兼容ioctl未检查设备连接状态。
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-2025-68257 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2025-68257 的情报信息
请登录查看更多情报信息。
CVE-2025-68257 其他参考 (4)
同批安全公告 · Linux · 2025-12-16 · 共 156 条
| CVE-2025-68192 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68263 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68315 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68285 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68284 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-40350 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68301 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-68304 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68255 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68256 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68226 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-40362 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68314 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68250 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68171 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68175 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68179 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68294 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68303 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-68234 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 156 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-68257
暂无评论