Use-after-free leading to out-of-bounds write in arm-smmu-v3.c smmu_detach_dev (pKVM EoP)
CVE-2026-0027 is a memory-safety vulnerability in the Arm SMMU v3 driver code (arm-smmu-v3.c) in the function smmu_detach_dev. The issue is described as a use-after-free condition that can result in a subsequent out-of-bounds write. In the Android March 2026 security context, it is categorized as a critical elevation-of-privilege issue affecting the protected Kernel-based Virtual Machine (pKVM) / kernel virtualization security boundary.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical protected KVM (pKVM) elevation-of-privilege vulnerability enabling kernel virtualization privilege escalation.
Android Kernel component privilege escalation vulnerability.
Android Kernel component privilege escalation vulnerability.
Critical elevation-of-privilege vulnerability affecting the Android kernel pKVM subsystem.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.