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CVE-2026-53195

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() build_i2c_fw_hdr() allocates a fixed-size buffer of (16*1024 - 512)…

Published Jun 25, 2026CWE-787EPSS 0.14%

Overview

CVE-2026-53195 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()

build_i2c_fw_hdr() allocates a fixed-size buffer of

(16*1024 - 512) + sizeof(struct ti_i2c_firmware_rec) bytes, then

copies le16_to_cpu(img_header->Length) bytes into it without

validating that Length fits within the available space after the

firmware record header.

img_header->Length is a __le16 from the firmware file and can be

up to 65535. check_fw_sanity() validates the total firmware size

but not img_header->Length specifically.

Fix by rejecting images where img_header->Length exceeds the

available destination space.

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/0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226aeRefgit.kernel.org/stable/c/130d6567eb148040eed1b73e1414ad6c27d22bd5Refgit.kernel.org/stable/c/294692d3296eee3391c348d7ea6401916d27806cRefgit.kernel.org/stable/c/2fd64bf0ad66ab5de0c73524591d879427ba5abaRefgit.kernel.org/stable/c/3e187152f44d76d7633a3855ffd0099e1588b82aRefgit.kernel.org/stable/c/4cb722747ed25971f35cc47ce5c0e79d7f717713Refgit.kernel.org/stable/c/5a79b634ee58786ca627268daefa7744f2af2e14Refgit.kernel.org/stable/c/b7faf660eefa2047ebc2959ff76da2b6eae2e9e3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53195?

CVE-2026-53195 is a high-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-53195?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-53195?

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-2026-53195?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53195 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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