# What is CVE-2023-6143? > CVE-2023-6143 is a high-severity flaw (CVSS 8.4) in 5th Gen GPU Architecture Kernel Driver from Arm, published on 4 March 2024. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.2%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.edgeprotect.io/what-is/cve-2023-6143 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **EdgeProtect risk score:** 46 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** High (CVSS 8.4 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.2% (latest exploit-likelihood forecast) - **Published:** 4 March 2024 - **Record last updated:** 27 March 2025 - **Main product:** 5th Gen GPU Architecture Kernel Driver from Arm - **Affected products:** 4 ## What is CVE-2023-6143? In plain terms An attacker has to be already on the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### The official description Use After Free vulnerability in Arm Ltd Midgard GPU Kernel Driver, 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 exploit a software race condition to perform improper memory processing operations. If the system’s memory is carefully prepared by the user and the system is under heavy load, then this in turn cause a use-after-free.This issue affects Midgard GPU Kernel Driver: from r13p0 through r32p0; Bifrost GPU Kernel Driver: from r1p0 through r18p0; Valhall GPU Kernel Driver: from r37p0 through r46p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r46p0. ### What kind of flaw is it? - CWE-416: Use After Free ### How an attack on it works - Where an attacker can be: Already on the device - How hard it is to pull off: Easy: no special conditions - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data, change data and take it offline Severity vector: `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` ## Is CVE-2023-6143 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.2%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%. ### Timeline - 4 March 2024: Published - 27 March 2025: Record last updated ### How EdgeProtect ranks it CVE-2023-6143 scores **46 out of 100 (Medium)**, with the action "Plan remediation". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: key context - Real threat activity around it: key context 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2023-6143? The published record lists 4 products. Versions are as published: "r41p0 to before r47p0" means from r41p0 up to, but not including, r47p0. - [5th Gen GPU Architecture Kernel Driver](https://www.edgeprotect.io/product/arm/5th_gen_gpu_architecture_kernel_driver) by [Arm](https://www.edgeprotect.io/vendors/arm) (Application): r41p0 to before r47p0 - [Bifrost GPU Kernel Driver](https://www.edgeprotect.io/product/arm/bifrost_gpu_kernel_driver) by [Arm](https://www.edgeprotect.io/vendors/arm) (Application): r1p0 to before r19p0 - [Midgard GPU Kernel Driver](https://www.edgeprotect.io/product/arm/midgard_gpu_kernel_driver) by [Arm](https://www.edgeprotect.io/vendors/arm) (Application): r13p0 to r32p0 - [Valhall GPU Kernel Driver](https://www.edgeprotect.io/product/arm/valhall_gpu_kernel_driver) by [Arm](https://www.edgeprotect.io/vendors/arm) (Application): r37p0 to before r47p0 ## How do I fix CVE-2023-6143? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? EdgeProtect can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [developer.arm.com](https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities) (Vendor advisory) ## Questions ### What is CVE-2023-6143? CVE-2023-6143 is a high-severity flaw in 5th Gen GPU Architecture Kernel Driver from Arm, published on 4 March 2024. An attacker has to be already on the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2023-6143? It scores 8.4 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2023-6143 is 46 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2023-6143 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.2%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2023-6143 affect? For 5th Gen GPU Architecture Kernel Driver from Arm: r41p0 to before r47p0. The record lists 4 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2023-6143? Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2023-6143 affect you? EdgeProtect keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.edgeprotect.io/register Book a demo: https://www.edgeprotect.io/contact