CVE-2026-68255
drm/virtio: bound EDID block reads to the response buffer
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.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Apply the security patch for virtio_get_edid_block.
- Validate EDID read offsets strictly.
- Ensure reads do not exceed array bounds.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68255.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68255 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68255
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68255 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68255 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '9fc2a017c5d597937e0c28b9a9669844aa796c42', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '2757e6e803092cf0aeaf4b735e16b5d3bdc705c5', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '35be0e2c6862abcd5e5f5445261f1fd910d4a9b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '375c1934ef0196d3b6d3a1eae3232bef8dae7bf7', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '9fc2a017c5d597937e0c28b9a9669844aa796c42', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '2757e6e803092cf0aeaf4b735e16b5d3bdc705c5', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '35be0e2c6862abcd5e5f5445261f1fd910d4a9b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '375c1934ef0196d3b6d3a1eae3232bef8dae7bf7', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '9fc2a017c5d597937e0c28b9a9669844aa796c42', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '2757e6e803092cf0aeaf4b735e16b5d3bdc705c5', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '35be0e2c6862abcd5e5f5445261f1fd910d4a9b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '375c1934ef0196d3b6d3a1eae3232bef8dae7bf7', 'versionType': 'git'}, {'status': 'affected', 'version': 'b4b01b4995fb15b55a2d067eb405917f5ab32709', 'lessThan': '4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/virtio/virtgpu_vq.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5 Added Reference https://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4 Added Reference https://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7 Added Reference https://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd Added Reference https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42