CVE-2022-49915: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mISDN: fix possible memory leak in mISDN_register_device() Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, add put_device() to give up the reference, so that the name can be freed in kobject_cleanup() when the refcount is 0. Set device class before put_device() to avoid null release() function WARN message in device_release().

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.30 — 4.9.333
linux	linux_kernel	4.10 — 4.14.299
linux	linux_kernel	4.15 — 4.19.265
linux	linux_kernel	4.20 — 5.4.224
linux	linux_kernel	5.5 — 5.10.154
linux	linux_kernel	5.11 — 5.15.78
linux	linux_kernel	5.16 — 6.0.8
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/029d5b7688a2f3a86f2a3be5a6ba9cc968c80e41 https://git.kernel.org/stable/c/080aabfb29b2ee9cbb8894a1d039651943d3773e https://git.kernel.org/stable/c/0d4e91efcaee081e919b3c50e875ecbb84290e41 https://git.kernel.org/stable/c/2ff6b669523d3b3d253a044fa9636a67d0694995 https://git.kernel.org/stable/c/a636fc5a7cabd05699b5692ad838c2c7a3abec7b https://git.kernel.org/stable/c/d1d1aede313eb2b9a84afd60ff6cfb7c33631e0e https://git.kernel.org/stable/c/e77d213843e67b4373285712699b692f9c743f61 https://git.kernel.org/stable/c/e7d1d4d9ac0dfa40be4c2c8abd0731659869b297

Frequently Asked Questions

What is CVE-2022-49915? +

In the Linux kernel, the following vulnerability has been resolved: mISDN: fix possible memory leak in mISDN_register_device() Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array"), the name of device is allocated dynamically, add put_device() to give up the reference, so that the name can be freed in kobject_cleanup() when the refcount is 0. Set device class before put_device() to avoid null release() function WARN message in device_release(). It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49915? +

CVE-2022-49915 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49915? +

CVE-2022-49915 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49915? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-49915