CVE-2022-50282 (CNNVD-202509-2156)
中文标题:
Linux kernel 安全漏洞
英文标题:
chardev: fix error handling in cdev_device_add()
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cdev_device_add函数中错误处理不当,可能导致空指针取消引用。
英文描述:
In the Linux kernel, the following vulnerability has been resolved: chardev: fix error handling in cdev_device_add() While doing fault injection test, I got the following report: ------------[ cut here ]------------ kobject: '(null)' (0000000039956980): is not initialized, yet kobject_put() is being called. WARNING: CPU: 3 PID: 6306 at kobject_put+0x23d/0x4e0 CPU: 3 PID: 6306 Comm: 283 Tainted: G W 6.1.0-rc2-00005-g307c1086d7c9 #1253 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:kobject_put+0x23d/0x4e0 Call Trace: <TASK> cdev_device_add+0x15e/0x1b0 __iio_device_register+0x13b4/0x1af0 [industrialio] __devm_iio_device_register+0x22/0x90 [industrialio] max517_probe+0x3d8/0x6b4 [max517] i2c_device_probe+0xa81/0xc00 When device_add() is injected fault and returns error, if dev->devt is not set, cdev_add() is not called, cdev_del() is not needed. Fix this by checking dev->devt in error path.
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 | f78b54e7d83c7879f9a6e49e6724019ca34177cc | - | - |
cpe:2.3:a:linux:linux:f78b54e7d83c7879f9a6e49e6724019ca34177cc:*:*:*:*:*:*:*
|
| Linux | Linux | d79d7d5c878809964da537336dad5ff55fa1605e | - | - |
cpe:2.3:a:linux:linux:d79d7d5c878809964da537336dad5ff55fa1605e:*:*:*:*:*:*:*
|
| Linux | Linux | 4.12 | - | - |
cpe:2.3:a:linux:linux:4.12:*:*:*:*:*:*:*
|
| linux | linux_kernel | * | - | - |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
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-2022-50282 |
2025-11-11 15:21:44 | 2025-11-11 07:37:58 |
| NVD | nvd_CVE-2022-50282 |
2025-11-11 14:58:37 | 2025-11-11 07:46:08 |
| CNNVD | cnnvd_CNNVD-202509-2156 |
2025-11-11 15:12:57 | 2025-11-11 08:00:11 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 3 -> 4
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-202509-2156
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']