CVE-2022-50756 (CNNVD-202512-4564)
中文标题:
Linux kernel 安全漏洞
英文标题:
nvme-pci: fix mempool alloc size
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mempool分配大小计算错误，可能导致内存损坏。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix mempool alloc size Convert the max size to bytes to match the units of the divisor that calculates the worst-case number of PRP entries. The result is used to determine how many PRP Lists are required. The code was previously rounding this to 1 list, but we can require 2 in the worst case. In that scenario, the driver would corrupt memory beyond the size provided by the mempool. While unlikely to occur (you'd need a 4MB in exactly 127 phys segments on a queue that doesn't support SGLs), this memory corruption has been observed by kfence.
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 | - | < dfb6d54893d544151e7f480bc44cfe7823f5ad23 | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
| Linux | Linux | 4.18 | - | - |
cpe:2.3:a:linux:linux:4.18:*:*:*:*:*:*:*
|
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-2022-50756 |
2025-12-25 02:03:30 | 2026-01-12 02:08:38 |
| NVD | nvd_CVE-2022-50756 |
2025-12-30 04:12:18 | 2026-01-12 02:26:45 |
| CNNVD | cnnvd_CNNVD-202512-4564 |
2026-01-11 06:15:04 | 2026-01-12 02:38:06 |
版本与语言
安全公告
变更历史
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-202512-4564
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 6 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']