# CVE-2026-56934: Linux IOMMU page table logic error in arm_lpae_split_blk_unmap

Source: https://junglewise.ai/threats/cve-2026-56934-in-arm-lpae-split-blk-unmap-of-drivers-iommu-io-pgtable-arm  
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-2026-56934 · Severity: info · Published 2026-11-10

A logic error in the Linux kernel's ARM LPAE IOMMU page table handling code could allow a local attacker to escalate privileges. The vulnerability affects how the kernel maps and unmaps memory regions for input/output operations, and could lead to unauthorized access to system resources or kernel-level execution.

Technologies: [Google Android](https://junglewise.ai/threats/technologies/android), [Linux Kernel](https://junglewise.ai/threats/technologies/kernel). Vendors: [Google](https://junglewise.ai/threats/vendors/google), [Linux](https://junglewise.ai/threats/vendors/linux).

## Quick answers

**Is CVE-2026-56934 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56934 being exploited in the wild.

**How severe is CVE-2026-56934?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Google Android; Linux Linux kernel.

**Is there a fix for CVE-2026-56934?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-56934 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-56934?** Check whether you run Google Android or Linux Kernel. 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.

## Technical details

A logic error in the arm_lpae_split_blk_unmap function within drivers/iommu/io-pgtable-arm-common.c allows local privilege escalation. The vulnerability requires user-level execution privileges but no user interaction. An attacker can exploit this to gain elevated privileges on the system.

## Affected products

- Google Android
- Linux Linux kernel

## Timeline

- 2026-11-10: disclosed: Published in Pixel Update 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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