CVE-2026-68255
CVE CVE-2026-68255EUVD EUVD-2026-55356Published 2026-08-10T12:01:24.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.6.148; b4b01b4995fb15b55a2d067eb405917f5ab32709 <4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd; b4b01b4995fb15b55a2d067eb405917f5ab32709 <2757e6e803092cf0aeaf4b735e16b5d3bdc705c5; patch: 6.18.42; b4b01b4995fb15b55a2d067eb405917f5ab32709 <35be0e2c6862abcd5e5f5445261f1fd910d4a9b4; 5.0; b4b01b4995fb15b55a2d067eb405917f5ab32709 <9fc2a017c5d597937e0c28b9a9669844aa796c42; b4b01b4995fb15b55a2d067eb405917f5ab32709 <375c1934ef0196d3b6d3a1eae3232bef8dae7bf7; patch: 0; patch: 7.1.6; patch: 7.2-rc2; patch: 6.12.101
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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