How severe is CVE-2023-4211?

CVE-2023-4211 has a CVSS score of 5.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which products are affected by CVE-2023-4211?

Affected package information for CVE-2023-4211 is not yet fully mapped. Check the official advisory links for details.

How do I patch CVE-2023-4211?

Apply the arm 5th gen gpu architecture kernel driver security patch or hotfix for CVE-2023-4211 on the affected version, following the vendor advisory for your exact build.

How do I detect CVE-2023-4211 across my infrastructure?

Inventory every arm 5th gen gpu architecture kernel driver deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2023-4211 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2023-4211?

O3 detects and blocks CVE-2023-4211 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2023-4211 actively exploited in the wild?

Yes. There are 4 known exploit references for CVE-2023-4211, including 4 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2023-4211?

CVE-2023-4211 has an EPSS (Exploit Prediction Scoring System) score of 1.4%, placing it in the 69th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

Is CVE-2023-4211 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2023-4211 (Arm Mali GPU Kernel Driver Use-After-Free Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2023-10-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2023-10-24. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2023-4211?

CVE-2023-4211 is classified as Use After Free (CWE-416). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2023-4211?

CVE-2023-4211 affects arm 5th gen gpu architecture kernel driver; arm bifrost gpu kernel driver; arm midgard gpu kernel driver; arm valhall gpu kernel driver. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2023-4211 published, and has it been updated?

CVE-2023-4211 was published on October 1, 2023 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2023-10-03 — agencies required to remediate by 2023-10-24

CVE-2023-4211

MEDIUM

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

Published

Oct 1, 2023

Updated

Jun 17, 2026

Affected

0 pkgs

Patched

None yet

Exploits

4 known

EPSS Exploitation Probability

via FIRST.org ↗

1.4%probability of exploitation in next 30 days

Lower Risk69th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

Affected Products

4 products · 4 configurations

Application

5th gen gpu architecture kernel driverarm

≥ r41p0 && < r43p0

range

Application

bifrost gpu kernel driverarm

≥ r0p0 && < r43p0

range

Application

midgard gpu kernel driverarm

≥ r12p0 && ≤ r32p0

range

Application

valhall gpu kernel driverarm

≥ r19p0 && < r43p0

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

A local non-privileged user can make improper GPU memory processing oper…

source.android.comGoogle-sheetSep 2023

A local non-privileged user can make improper GPU memory processing oper…

developer.arm.comGoogle-sheetOct 2023

A local non-privileged user can make improper GPU memory processing oper…

bleepingcomputer.comAPIOct 2023

A local non-privileged user can make improper GPU memory processing oper…

cisa.govCISAOct 2023

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every arm 5th gen gpu architecture kernel driver deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Fix
Apply the arm 5th gen gpu architecture kernel driver security patch or hotfix for CVE-2023-4211 on the affected version, following the vendor advisory for your exact build.
Workarounds
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2023-4211 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2023-4211. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

O3 Security · Runtime Protection

Is CVE-2023-4211 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2023-4211 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

Protect my workloads How runtime protection works

CVE-2023-4211

EPSS Exploitation Probability

Description

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

How O3 protects you

Frequently Asked Questions

Is CVE-2023-4211 being exploited in your environment?