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CVE-2026-53339

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: i2c: qcom-cci: Fix NULL pointer dereference in cci_remove() On all modern platforms Qualcomm CCI controller provides two I2C ma…

Published Jul 1, 2026CWE-476EPSS 0.12%

Overview

CVE-2026-53339 is a medium-severity vulnerability. It was published on July 1, 2026 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:

i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()

On all modern platforms Qualcomm CCI controller provides two I2C masters,

and on particular boards only one I2C master may be initialized, and in

such cases the device unbinding or driver removal causes a NULL pointer

dereference, because cci_halt() is called for all two I2C masters, but

a completion is initialized only for the single enabled master:

% rmmod i2c-qcom-cci

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

<snip>

Call trace:

__wait_for_common+0x194/0x1a8 (P)

wait_for_completion_timeout+0x20/0x2c

cci_remove+0xc4/0x138 [i2c_qcom_cci]

platform_remove+0x20/0x30

device_remove+0x4c/0x80

device_release_driver_internal+0x1c8/0x224

driver_detach+0x50/0x98

bus_remove_driver+0x6c/0xbc

driver_unregister+0x30/0x60

platform_driver_unregister+0x14/0x20

qcom_cci_dri

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/4cd206c1d57a9370d5219f7b1fc45169d7bdf951Refgit.kernel.org/stable/c/4d2b4a9cda6837e5ee1de1290f2e773a713b71e9Refgit.kernel.org/stable/c/7107627b8b35015027201e7a095a3f6e30b4a46fRefgit.kernel.org/stable/c/729ac5a4b966aac42e08a94dea966f4429008548Refgit.kernel.org/stable/c/8ce7ff721a5e9d06d53ef65d01c89fce6d26d6ffRefgit.kernel.org/stable/c/a162a260c8c4db7501c65220e76913e8e351f823Refgit.kernel.org/stable/c/a50b8adb9cdb9a495b0b45583956897b7411ed7aRefgit.kernel.org/stable/c/e8669d12da0ade52adfe0abe96cd99e708abc9bd

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53339?

CVE-2026-53339 is a medium-severity vulnerability. It was published on July 1, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53339?

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-2026-53339?

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-2026-53339?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53339 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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