CVE-2026-89814 — CVE & Security Advisory Radar

🎯 CVE-2026-89814 🇪🇺 EUVD

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CVE-2026-89814 | In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: clamp the isolation index for rings outside a partition adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN. Fall back to the first slot the way the cleaner s

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: clamp the isolation index for rings outside a partition

adev->isolation[] has one slot per partition, but a ring that is not
assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing
the array with it is out of bounds. SDMA submissions hit this on both
the isolation enforcement and the VM flush path and trip UBSAN.

Fall back to the first slot the way the cleaner shader path already
does, and stop taking the address before the ring type check that makes
it relevant.

Klassifikation & Betroffenheit:

Linux Linux patch: 7.3-rc1Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0bfb938182d1313e5cac32ae38dbaaa4eabe4af4Linux patch: 7.2.5Linux 0 <7.2.5Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b30900566642ceb2c9e12b56c2afec28d0fd91a0Linux patch: 6.18.51Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <964de255497ffd7cb8a86e405b8ac6d927e7e177Linux 0 <6.18.51

Improper Control of Generation of Code ('Code Injection') 🎯 Medium

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

🛡️ Empfohlene Mitigation: Refactor your program so that you do not have to dynamically generate code.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-35 · Leverage Executable Code in Non-Executab… (Very High) CAPEC-77 · Manipulating User-Controlled Variables (Very High) CAPEC-242 · Code Injection (High)

🎯 ATT&CK-Techniken (Kill-Chain-Verhalten):

T1027.006 · Obfuscated Files or Information: H… T1027.009 · Obfuscated Files or Information: E… T1564.009 · Hide Artifacts: Resource Forking

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-90049 9.3 CVE-2026-89930 9.3 CVE-2026-89918 9.3 CVE-2026-89916 9.3 CVE-2026-89915 9.3

🩹 Patch verfügbar (OSV):

🩹 Kernel ≥ 6.18.51 🩹 Kernel ≥ 7.2.5

📰 Eigene Berichterstattung: ➔ CVE-2026-89814 | Linux Kernel up to 6.18.50/7.2.4 drm/amdgpu out-of-bounds (WID-

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 09/2026

Heute 21.09.

CVSS-Vektor-Analyse: 7.8

AV · Angriffsvektor Lokal

AC · Komplexität Gering

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:16.09.2026

Aktualisiert:17.09.2026 10:17

Assigner (CNA):Linux

EUVD-ID:EUVD-2026-80414

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Kernel-Paket aktualisieren (apt upgrade linux-image / yum update kernel) und System neu starten.

Tier	2026-09-02	2026-09-20
≥90 %	0	489
≥50 %	0	1477
≥10 %	0	0
<10 %	300	0

EPSS

0.2%

CVE-2026-89814 💻 Lokal 🔑 Geringe Nutzerrechte nötig

Linux

CVE-2026-89814 | In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: clamp the isolation index for rings outside a partition adev->isolation[] has one slot per partition, but a ring that is not assigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing the array with it is out of bounds. SDMA submissions hit this on both the isolation enforcement and the VM flush path and trip UBSAN. Fall back to the first slot the way the cleaner s

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Kernel-Paket aktualisieren (apt upgrade linux-image / yum update kernel) und System neu starten.

16.09.2026

🛡️ Details ➔

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