CVE-2025-38481 (CNNVD-202507-3442)
中文标题:
Linux kernel 安全漏洞
英文标题:
comedi: Fail COMEDI_INSNLIST ioctl if n_insns is too large
漏洞描述
中文描述:
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，该漏洞源于未验证n_insns大小，可能导致内存分配失败。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: comedi: Fail COMEDI_INSNLIST ioctl if n_insns is too large The handling of the `COMEDI_INSNLIST` ioctl allocates a kernel buffer to hold the array of `struct comedi_insn`, getting the length from the `n_insns` member of the `struct comedi_insnlist` supplied by the user. The allocation will fail with a WARNING and a stack dump if it is too large. Avoid that by failing with an `-EINVAL` error if the supplied `n_insns` value is unreasonable. Define the limit on the `n_insns` value in the `MAX_INSNS` macro. Set this to the same value as `MAX_SAMPLES` (65536), which is the maximum allowed sum of the values of the member `n` in the array of `struct comedi_insn`, and sensible comedi instructions will have an `n` of at least 1.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Linux | Linux | - | < 454d732dfd0aef7d7aa950c409215ca06d717e93 | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
| Linux | Linux | 2.6.29 | - | - |
cpe:2.3:a:linux:linux:2.6.29:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
| linux | linux_kernel | 6.16 | - | - |
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
|
| debian | debian_linux | 11.0 | - | - |
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2025-38481 |
2025-11-11 15:23:18 | 2025-11-11 07:40:28 |
| NVD | nvd_CVE-2025-38481 |
2025-11-11 15:00:57 | 2025-11-11 07:48:17 |
| CNNVD | cnnvd_CNNVD-202507-3442 |
2025-11-11 15:12:51 | 2025-11-11 08:00:02 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 2 -> 5
查看详细变更
- vulnerability_type: 未提取 -> 其他
- severity: SeverityLevel.MEDIUM -> SeverityLevel.UNKNOWN
- cvss_score: 未提取 -> 0.0
- cnnvd_id: 未提取 -> CNNVD-202507-3442
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 9 -> 2
- references_count: 8 -> 10
- data_sources: ['cve'] -> ['cve', 'nvd']