CVE-2026-68255drm/virtio: bound EDID block reads to the response buffer
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No exploitation reported and no EPSS estimate yet.
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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
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 65ce911f341ad8ff0c08922eff5bb6db75666eb0; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 64bedd2758eccbc74d39f7006a7ec16fa39dc901; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 3f506a85a905b080cadc029a1651a310479090a6; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 9fc2a017c5d597937e0c28b9a9669844aa796c42; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 2757e6e803092cf0aeaf4b735e16b5d3bdc705c5; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 35be0e2c6862abcd5e5f5445261f1fd910d4a9b4; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 375c1934ef0196d3b6d3a1eae3232bef8dae7bf7; from b4b01b4995fb15b55a2d067eb405917f5ab32709 before 4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd | CNA record |
References
- https://git.kernel.org/stable/c/65ce911f341ad8ff0c08922eff5bb6db75666eb0
- https://git.kernel.org/stable/c/64bedd2758eccbc74d39f7006a7ec16fa39dc901
- https://git.kernel.org/stable/c/3f506a85a905b080cadc029a1651a310479090a6
- https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42
- 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/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.