# CVE-2022-50282: linux: In the Linux kernel, the following vulnerability has been resolved:  chardev: fix error handling in cdev_device_add()...

CVE-2022-50282 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50282, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50282
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 15, 2025

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50282.md) | Sep 15, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50282.md) | Sep 15, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50282](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50282.md) | Sep 15, 2025 |

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