CVE-2026-68255 — CVE & Security Advisory Radar

🎯 CVE-2026-68255 HIGH 7.7 🔥 EPSS 19% 🇪🇺 EUVD

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CVE-2026-68255 | In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtio_get_edid_block() validates the read offset only against the device-supplied resp->size field, never against the fixed-size resp->edid array. The EDID block index is driven by the device-supplied extension count, so a malicious virtio-gpu backend can advertise a large size together with a high block count and read far past the

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

drm/virtio: bound EDID block reads to the response buffer

virtio_get_edid_block() validates the read offset only against the
device-supplied resp->size field, never against the fixed-size resp->edid
array. The EDID block index is driven by the device-supplied extension
count, so a malicious virtio-gpu backend can advertise a large size
together with a high block count and read far past the array into adjacent
kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds
read / info leak).

Also reject any read whose end exceeds the size of the edid array.
Conforming EDID responses stay within the array and are unaffected.

Klassifikation & Betroffenheit:

Linux Linux patch: 6.6.148Linux b4b01b4995fb15b55a2d067eb405917f5ab32709 <4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccdLinux b4b01b4995fb15b55a2d067eb405917f5ab32709 <2757e6e803092cf0aeaf4b735e16b5d3bdc705c5Linux patch: 6.18.42Linux b4b01b4995fb15b55a2d067eb405917f5ab32709 <35be0e2c6862abcd5e5f5445261f1fd910d4a9b4Linux patch: 6.1.183Linux 5.0Linux b4b01b4995fb15b55a2d067eb405917f5ab32709 <9fc2a017c5d597937e0c28b9a9669844aa796c42

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-2026-72496 9.2 CVE-2026-74521 9.1 CVE-2026-74476 9.1 CVE-2026-74287 9.1 CVE-2026-72348 9.1

🩹 Patch verfügbar (OSV):

🩹 Kernel ≥ 5.10.266 🩹 Kernel ≥ 5.15.217 🩹 Kernel ≥ 6.1.183 🩹 Kernel ≥ 6.6.148 🩹 Kernel ≥ 6.12.101 🩹 Kernel ≥ 6.18.42

📚 Referenzen & Quellen:

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

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 08/2026

Heute 07.09.

CVSS-Vektor-Analyse: 7.7

AV · Angriffsvektor Lokal

AC · Komplexität Gering

PR · Privilegien Keine

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Keine

A · Verfügbarkeit Hoch

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

Veröffentlicht:10.08.2026

Aktualisiert:23.08.2026 13:16

Assigner (CNA):Linux

EUVD-ID:EUVD-2026-55356

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	2026-08-29	2026-09-06
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

7.7 HIGH

🇪🇺 EUVD

EPSS

19%

CVE-2026-68255 💻 Lokal 🔓 Keine Authentifizierung nötig

Linux

CVE-2026-68255 | In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtio_get_edid_block() validates the read offset only against the device-supplied resp->size field, never against the fixed-size resp->edid array. The EDID block index is driven by the device-supplied extension count, so a malicious virtio-gpu backend can advertise a large size together with a high block count and read far past the

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

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

10.08.2026

🛡️ Details ➔

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