EUVD-2026-72798
GHSA-77xw-jh9c-7m36
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local non-privileged user triggers kernel UAF via ordinary GPU calls with no UI interaction; full kernel compromise achievable.
Primary rating from Vendor (Arm).
CVSS VectorVendor: Arm
Lifecycle Timeline
4DescriptionCVE.org
Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user process to perform valid GPU memory processing operations to access already freed memory.
This issue affects Bifrost GPU Kernel Driver: from r44p0 through r49p4, from r50p0 through r51p0, from r54p1 through r54p2; Valhall GPU Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3; Arm 5th Gen GPU Architecture Kernel Driver: from r44p0 through r49p5, from r50p0 through r54p3, r55p0.
AnalysisAI
Use-after-free in Arm's Bifrost, Valhall, and 5th Gen GPU Architecture Kernel Drivers enables a local unprivileged process to access deallocated kernel memory through valid GPU memory processing operations, resulting in full confidentiality, integrity, and availability compromise (CVSS C:H/I:H/A:H). The flaw spans broad version ranges across all three driver families from r44p0 through r54p3/r55p0, affecting a large population of devices built on Arm Mali GPU hardware. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local code execution with at least low-privilege user access (AV:L, PR:L) - a logged-in shell account on Linux or an installed app on Android is sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately models a local privilege escalation scenario: a low-privileged user account is sufficient, no user interaction is required, attack complexity is low, and the outcome is full system compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to a driver release beyond the affected ranges per the Arm security advisory at https://support.arm.com/documentation/111552/1-0/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all devices and systems running affected Arm Mali GPU driver versions (r44p0-r54p3/r55p0) and catalog them by security tier. …
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
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