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.
References
Configurations
Configuration 1 (hide)
|
History
04 Dec 2025, 18:56
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CWE | CWE-908 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797 - Patch | |
| References | () https://git.kernel.org/stable/c/28dc61cc49c6e995121c6d86bef4b73df78dda80 - Patch | |
| References | () https://git.kernel.org/stable/c/34d17b39bceef25e4cf9805cd59250ae05d0a139 - Patch | |
| References | () https://git.kernel.org/stable/c/5d2146889fad4cb9e6c13e790d4cfd871486eca8 - Patch | |
| References | () https://git.kernel.org/stable/c/6acf8597c5b04f455ee0649e11e5f3bcd28f381e - Patch | |
| References | () https://git.kernel.org/stable/c/85a5660491b507d33662b8e81c142e6041e642eb - Patch | |
| References | () https://git.kernel.org/stable/c/b5de1eac71fec1af7723f1083d23a24789fd795c - Patch | |
| References | () https://git.kernel.org/stable/c/c46db6088bccff5115674d583fef46ede80077a2 - Patch | |
| References | () https://git.kernel.org/stable/c/d85b5247a79355b8432bfd9ac871f96117f750d4 - Patch |
15 Sep 2025, 15:22
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-15 15:15
Updated : 2025-12-04 18:56
NVD link : CVE-2022-50282
Mitre link : CVE-2022-50282
CVE.ORG link : CVE-2022-50282
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-908
Use of Uninitialized Resource