# CVE-2026-55307: Google Pixel GSA information disclosure in hwcrypto-kdn

Source: https://junglewise.ai/threats/cve-2026-55307-in-kdn-set-sysregs-prot-of-hwcrypto-kdn-c-there-is-a-possible  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-55307 · Severity: medium · CVSS 4.4 · Published 2026-10-06

A logic error in Google Pixel's hardware cryptography module (GSA) can leak sensitive information to processes running with system privileges. An attacker with system-level access could exploit this vulnerability to disclose kernel or security-sensitive data, potentially compromising device security and user privacy.

Technologies: [Google Pixel](https://junglewise.ai/threats/technologies/google-pixel). Vendors: [Google](https://junglewise.ai/threats/vendors/google).

## Quick answers

**Is CVE-2026-55307 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-55307 being exploited in the wild.

**How severe is CVE-2026-55307?** Medium severity, with a CVSS score of 4.4, published 6 October 2026.

**Which products and versions are affected?** Google Pixel prior to 2026-10-05 security patch.

**Is there a fix for CVE-2026-55307?** Yes: fixed in Google Pixel devices with security patch level 2026-10-05 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-55307 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-55307?** Check whether you run Google Pixel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Google Pixel devices with security patch level 2026-10-05 or later

## Technical details

A logic error in the kdn_set_sysregs_prot function of hwcrypto-kdn.c allows information disclosure of protected system registers. The vulnerability requires System execution privileges to exploit and can be triggered without user interaction. A local attacker with sufficient privileges can read sensitive register contents.

## Affected products

- Google Pixel prior to 2026-10-05 security patch

## Timeline

- 2026-10-06: disclosed
- 2026-10-05: patched

## References

- [https://source.android.com/docs/security/bulletin/pixel/2026/2026-10-01](https://source.android.com/docs/security/bulletin/pixel/2026/2026-10-01)

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