CVE-2022-48663: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: gpio: mockup: fix NULL pointer dereference when removing debugfs We now remove the device's debugfs entries when unbinding the driver. This now causes a NULL-pointer dereference on module exit because the platform devices are unregistered *after* the global debugfs directory has been recursively removed. Fix it by unregistering the devices first.

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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-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.10.144 — 5.10.146
linux	linux_kernel	5.15.69 — 5.15.71
linux	linux_kernel	5.19.10 — 5.19.12

References

Advisories & Patches

https://git.kernel.org/stable/c/18352095a0d581f6aeb1e9fc9d68cc0152cd64b4 https://git.kernel.org/stable/c/af0bfabf06c74c260265c30ba81a34e7dec0e881 https://git.kernel.org/stable/c/b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68 https://git.kernel.org/stable/c/bdea98b98f844bd8a983ca880893e509a8b4162f https://git.kernel.org/stable/c/18352095a0d581f6aeb1e9fc9d68cc0152cd64b4 https://git.kernel.org/stable/c/af0bfabf06c74c260265c30ba81a34e7dec0e881 https://git.kernel.org/stable/c/b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68 https://git.kernel.org/stable/c/bdea98b98f844bd8a983ca880893e509a8b4162f

Frequently Asked Questions

What is CVE-2022-48663? +

In the Linux kernel, the following vulnerability has been resolved: gpio: mockup: fix NULL pointer dereference when removing debugfs We now remove the device's debugfs entries when unbinding the driver. This now causes a NULL-pointer dereference on module exit because the platform devices are unregistered *after* the global debugfs directory has been recursively removed. Fix it by unregistering the devices first. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48663? +

CVE-2022-48663 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-2022-48663? +

CVE-2022-48663 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-2022-48663? +

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-2022-48663