CVE-2022-50364: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: mux: reg: check return value after calling platform_get_resource() It will cause null-ptr-deref in resource_size(), if platform_get_resource() returns NULL, move calling resource_size() after devm_ioremap_resource() that will check 'res' to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.

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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	4.3 — 5.10.163
linux	linux_kernel	5.11 — 5.15.86
linux	linux_kernel	5.16 — 6.0.16
linux	linux_kernel	6.1 — 6.1.2

References

Advisories & Patches

https://git.kernel.org/stable/c/2d47b79d2bd39cc6369eccf94a06568d84c906ae https://git.kernel.org/stable/c/61df25c41b8e0d2c988ccf17139f70075a2e1ba4 https://git.kernel.org/stable/c/8212800943997fab61874550278d653cb378c60c https://git.kernel.org/stable/c/f5049b3ad9446203b916ee375f30fa217735f63a https://git.kernel.org/stable/c/f7a440c89b6d460154efeb058272760e41bdfea8

Frequently Asked Questions

What is CVE-2022-50364? +

In the Linux kernel, the following vulnerability has been resolved: i2c: mux: reg: check return value after calling platform_get_resource() It will cause null-ptr-deref in resource_size(), if platform_get_resource() returns NULL, move calling resource_size() after devm_ioremap_resource() that will check 'res' to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50364? +

CVE-2022-50364 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-2022-50364? +

CVE-2022-50364 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-2022-50364? +

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-2022-50364