--- cve: "CVE-2026-68255" severity: "HIGH" cvss: 7.7 epss: "19%" vendor: "Linux" kev: false exploited: false published: "2026-08-10 13:20:14" tags: [cve, security, high] source: tsecurity.de CVE-Dossier exported: "2026-09-07T13:20:50+02:00" --- # CVE-2026-68255 > 7.7 HIGH ## Beschreibung 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. ## CVSS-Vektor ``` CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H ``` | Metrik | Wert | Bewertung | |---|---|---| | AV Angriffsvektor | Lokal | good | | AC Komplexität | Gering | bad | | PR Privilegien | Keine | bad | | UI Interaktion | Keine | bad | | S Scope | Unverändert | good | | C Vertraulichkeit | Hoch | bad | | I Integrität | Keine | good | | A Verfügbarkeit | Hoch | bad | ## 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 - Kernel ≥ 7.1.6 ## Referenzen - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-68255) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_