# CVE-2026-56944: Google Android pKVM SMMUv3 use-after-free in smmu_detach_dev

Source: https://junglewise.ai/threats/cve-2026-56944-in-smmu-detach-dev-of-private-google-modules-iommu-arm-smmu-v3  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-56944 · Severity: info · Published 2026-11-10

Google Pixel devices use a protected kernel virtual machine (pKVM) to isolate security-sensitive code and prevent privilege escalation. A use-after-free vulnerability in the ARM SMMUv3 (System Memory Management Unit) driver allows a local attacker with user-level privileges to escalate to kernel privileges without requiring any user interaction, potentially compromising the entire device.

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

## Quick answers

**Is CVE-2026-56944 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56944 being exploited in the wild.

**How severe is CVE-2026-56944?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Google Pixel Devices All supported Pixel devices prior to security patch 2026-11-05.

**Is there a fix for CVE-2026-56944?** Yes: fixed in 2026-11-05 security patch level. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-56944 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-56944?** Check whether you run Google Pixel Devices 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 2026-11-05 security patch level

## Technical details

A logic error in the smmu_detach_dev function of the ARM SMMUv3 pKVM driver leads to a use-after-free condition. An unprivileged local attacker can trigger this flaw through direct system calls or device interaction to dereference freed memory and execute arbitrary code at kernel privilege level. The vulnerability affects pKVM SMMU isolation and breaks the intended privilege boundary.

## Affected products

- Google Pixel devices All supported Pixel devices prior to security patch 2026-11-05

## Timeline

- 2026-11-10: disclosed: Published in Google Pixel Update Bulletin—November 2026
- 2026-11-05: patched: Security patch level 2026-11-05 addresses all issues in the bulletin

## References

- [https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01](https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01)

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