CVE-2022-50499 (CNNVD-202510-641)
中文标题:
Linux kernel 安全漏洞
英文标题:
media: dvb-core: Fix double free in dvb_register_device()
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，该漏洞源于未正确设置空指针，可能导致双重释放和释放后重用。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.
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 | 8c17f6f5d0d6aab72a2af25c9911ac66e984be06 | - | - |
cpe:2.3:a:linux:linux:8c17f6f5d0d6aab72a2af25c9911ac66e984be06:*:*:*:*:*:*:*
|
| Linux | Linux | 202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c | - | - |
cpe:2.3:a:linux:linux:202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c:*:*:*:*:*:*:*
|
| Linux | Linux | 5.4 | - | - |
cpe:2.3:a:linux:linux:5.4:*:*:*:*:*:*:*
|
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-2022-50499 |
2025-11-11 15:21:45 | 2025-11-11 07:37:58 |
| NVD | nvd_CVE-2022-50499 |
2025-11-11 14:58:37 | 2025-11-11 07:46:08 |
| CNNVD | cnnvd_CNNVD-202510-641 |
2025-11-11 15:12:59 | 2025-11-11 08:00:21 |
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-202510-641
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']