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CVE-2023-5427

Arm 5th Gen Gpu Architecture Kernel Driver use-after-free

7.8 HIGHPublic exploitEPSS 0.33%
  1. Published1 Dec 2023

Description

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 to make improper GPU processing operations to gain access to already freed memory.This issue affects Bifrost GPU Kernel Driver: from r44p0 through r45p0; Valhall GPU Kernel Driver: from r44p0 through r45p0; Arm 5th Gen GPU Architecture Kernel Driver: from r44p0 through r45p0.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Arm 5th Gen Gpu Architecture Kernel Driver≥ r44p0 < r46p0
Arm Bifrost Gpu Kernel Driver≥ r44p0 < r46p0
Arm Valhall Gpu Kernel Driver≥ r44p0 < r46p0

Remediation

Fixed in
Arm 5th Gen Gpu Architecture Kernel Driver≥ r46p0
Arm Bifrost Gpu Kernel Driver≥ r46p0
Arm Valhall Gpu Kernel Driver≥ r46p0

References

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Frequently asked

Is CVE-2023-5427 being actively exploited?

CVE-2023-5427 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.33%.

How severe is CVE-2023-5427?

CVE-2023-5427 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.33% probability of exploitation.

Which products are affected by CVE-2023-5427?

Affected products include Arm 5th Gen Gpu Architecture Kernel Driver, Arm Bifrost Gpu Kernel Driver, Arm Valhall Gpu Kernel Driver.

How do I fix CVE-2023-5427?

Upgrade affected software to a fixed version, for example Arm 5th Gen Gpu Architecture Kernel Driver r46p0, Arm Bifrost Gpu Kernel Driver r46p0, Arm Valhall Gpu Kernel Driver r46p0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-5427 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.