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CVE-2023-52647: media: nxp: imx8-isi: Check whether crossbar pad is non-NULL before access

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-01 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 6.4 before 6.6.24; from 6.7 before 6.7.12; from 6.8 before 6.8.3 — fixed in 6.6.24, 6.7.12, 6.8.3

How to fix

Upgrade to a fixed version: Linux kernel 6.6.24, 6.7.12, 6.8.3. Check the vendor advisory for mitigations.

References

• 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

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