CVE-2026-80568 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - block s_input when F54 queue is busy Changing the input (diagnostic report type) mid-stream changes the report size. Since V4L2 buffers are allocated based on the size at stream start, changing the input while streaming could lead to a heap buffer overflow if the new size is larger than the allocated buffers. Prevent this by blocking VIDIOC_S_INPUT with -EBUSY if the V4L2 queue is busy (streaming).

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/1d718f1461766e9f00a8dbeb4f13f1b1c19d90ac https://git.kernel.org/stable/c/493ba8e794729649689438edba72337111303cc4 https://git.kernel.org/stable/c/7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af https://git.kernel.org/stable/c/cae79513f9115c350561b16f36adcb47c9bfff12 https://git.kernel.org/stable/c/ddd9a53faf3b65e5920cb802cb1db6f4615bdfef https://git.kernel.org/stable/c/fa69f93015becf3729716de2199b58540aa99672 https://git.kernel.org/stable/c/fbfd76746adc16d64be29ff113f673b70bc3f5c2 https://git.kernel.org/stable/c/ff0849705d29277fd1f6fc6596674b9308724fb2

Frequently Asked Questions

What is CVE-2026-80568? +

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - block s_input when F54 queue is busy Changing the input (diagnostic report type) mid-stream changes the report size. Since V4L2 buffers are allocated based on the size at stream start, changing the input while streaming could lead to a heap buffer overflow if the new size is larger than the allocated buffers. Prevent this by blocking VIDIOC_S_INPUT with -EBUSY if the V4L2 queue is busy (streaming). It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-80568? +

CVE-2026-80568 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80568? +

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.

CVE-2026-80568