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ReviewHigh

CVE-2026-80568

Linux

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).

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.27
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

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).

Affected product and versions

Product
Linux
Affected versions
>= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < 7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < fa69f93015becf3729716de2199b58540aa99672, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < 493ba8e794729649689438edba72337111303cc4, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < 1d718f1461766e9f00a8dbeb4f13f1b1c19d90ac, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < cae79513f9115c350561b16f36adcb47c9bfff12, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < ff0849705d29277fd1f6fc6596674b9308724fb2, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < ddd9a53faf3b65e5920cb802cb1db6f4615bdfef, >= 3a762dbd5347514c3cb2ac756a92a3d1c7646a2d < fbfd76746adc16d64be29ff113f673b70bc3f5c2, >= 4.9
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available