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CVE-2022-48987

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking…

Published Oct 21, 2024CWE-190EPSS 0.25%

Overview

CVE-2022-48987 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

media: v4l2-dv-timings.c: fix too strict blanking sanity checks

Sanity checks were added to verify the v4l2_bt_timings blanking fields

in order to avoid integer overflows when userspace passes weird values.

But that assumed that userspace would correctly fill in the front porch,

backporch and sync values, but sometimes all you know is the total

blanking, which is then assigned to just one of these fields.

And that can fail with these checks.

So instead set a maximum for the total horizontal and vertical

blanking and check that each field remains below that.

That is still sufficient to avoid integer overflows, but it also

allows for more flexibility in how userspace fills in these fields.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0d73b49c4037199472b29574ae21c21aef493971Refgit.kernel.org/stable/c/2572ab14b73aa45b6ae7e4c089ccf119fed5cf89Refgit.kernel.org/stable/c/32f01f0306a98629508f84d7ef0d1d037bc274a2Refgit.kernel.org/stable/c/4afc77068e36cee45b39d4fdc7513de26980f72cRefgit.kernel.org/stable/c/5eef2141776da02772c44ec406d6871a790761eeRefgit.kernel.org/stable/c/6fb8bc29bfa80707994a63cc97e2f9920e0b0608Refgit.kernel.org/stable/c/a2b56627c0d13009e02f6f2c0206c0451ed19a0eRefgit.kernel.org/stable/c/d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48987?

CVE-2022-48987 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48987?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48987?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-48987?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48987 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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