CVE-2023-52647: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: media: nxp: imx8-isi: Check whether crossbar pad is non-NULL before access When translating source to sink streams in the crossbar subdev, the driver tries to locate the remote subdev connected to the sink pad. The remote pad may be NULL, if userspace tries to enable a stream that ends at an unconnected crossbar sink. When that occurs, the driver dereferences the NULL pad, leading to a crash. Prevent the crash by checking if the pad is NULL before using it, and return an error if it is.

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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	6.4 — 6.6.24
linux	linux_kernel	6.7 — 6.7.12
linux	linux_kernel	6.8 — 6.8.3

References

Advisories & Patches

https://git.kernel.org/stable/c/91c8ce42fcde09f1da24acab9013b3e19cb88a4e https://git.kernel.org/stable/c/c4bd29bf5b7f67925bc1abd16069f22dadf5f061 https://git.kernel.org/stable/c/c95318607fbe8fdd44991a8dad2e44118e6b8812 https://git.kernel.org/stable/c/eb2f932100288dbb881eadfed02e1459c6b9504c https://git.kernel.org/stable/c/91c8ce42fcde09f1da24acab9013b3e19cb88a4e https://git.kernel.org/stable/c/c4bd29bf5b7f67925bc1abd16069f22dadf5f061 https://git.kernel.org/stable/c/c95318607fbe8fdd44991a8dad2e44118e6b8812 https://git.kernel.org/stable/c/eb2f932100288dbb881eadfed02e1459c6b9504c

Frequently Asked Questions

What is CVE-2023-52647? +

In the Linux kernel, the following vulnerability has been resolved: media: nxp: imx8-isi: Check whether crossbar pad is non-NULL before access When translating source to sink streams in the crossbar subdev, the driver tries to locate the remote subdev connected to the sink pad. The remote pad may be NULL, if userspace tries to enable a stream that ends at an unconnected crossbar sink. When that occurs, the driver dereferences the NULL pad, leading to a crash. Prevent the crash by checking if the pad is NULL before using it, and return an error if it is. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52647? +

CVE-2023-52647 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-2023-52647? +

CVE-2023-52647 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-2023-52647? +

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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