Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 65ce911f341ad8ff0c08922eff5bb6db75666eb0; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 64bedd2758eccbc74d39f7006a7ec16fa39dc901; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 3f506a85a905b080cadc029a1651a310479090a6; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 9fc2a017c5d597937e0c28b9a9669844aa796c42; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 2757e6e803092cf0aeaf4b735e16b5d3bdc705c5; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 35be0e2c6862abcd5e5f5445261f1fd910d4a9b4; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 375c1934ef0196d3b6d3a1eae3232bef8dae7bf7; >= b4b01b4995fb15b55a2d067eb405917f5ab32709, < 4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd |
| Linux | Linux | 5.0 |
References
- https://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5
- https://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4
- https://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7
- https://git.kernel.org/stable/c/3f506a85a905b080cadc029a1651a310479090a6
- https://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd
- https://git.kernel.org/stable/c/64bedd2758eccbc74d39f7006a7ec16fa39dc901
- https://git.kernel.org/stable/c/65ce911f341ad8ff0c08922eff5bb6db75666eb0
- https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42
Timeline
- Published
- Aug 10, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received