{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68255", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.377Z", "datePublished": "2026-08-10T12:01:24.835Z", "dateUpdated": "2026-08-13T22:42:21.862Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-13T22:42:21.862Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: bound EDID block reads to the response buffer\n\nvirtio_get_edid_block() validates the read offset only against the\ndevice-supplied resp->size field, never against the fixed-size resp->edid\narray. The EDID block index is driven by the device-supplied extension\ncount, so a malicious virtio-gpu backend can advertise a large size\ntogether with a high block count and read far past the array into adjacent\nkernel memory, which is then surfaced in the parsed EDID (an out-of-bounds\nread / info leak).\n\nAlso reject any read whose end exceeds the size of the edid array.\nConforming EDID responses stay within the array and are unaffected."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.7, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The attacker is a malicious or compromised virtio-gpu backend (host/hypervisor device emulation or a vhost-user device process) supplying crafted EDID responses over the virtqueue; this is device-to-guest-kernel access, not remote network access.\nAC:L - The device fully controls resp->size, the EDID extension count and the timing of the read by raising VIRTIO_GPU_EVENT_DISPLAY config-change interrupts, so it can trigger the out-of-bounds read reliably and repeatedly with no conditions outside its control.\nPR:N - No guest credentials are needed at all: the vulnerable path runs in the virtio-gpu probe and the config-changed workqueue in kernel context, driven purely by device responses.\nUI:N - EDID re-reads are initiated automatically at probe and on device-raised display events; no guest user has to open, mount or interact with anything.\nS:U - The out-of-bounds read and the resulting disclosure both occur within the guest kernel's own security authority; no IOMMU, VM or sandbox boundary is crossed by the impact itself.\nC:H - Block indices up to 255 give start offsets of ~32 KB past the 1024-byte resp->edid array, reading far beyond the kmalloc'd response object into adjacent kernel heap memory, which is then surfaced as parsed EDID via the connector blob property and world-readable sysfs edid file, and hex-dumped for bad blocks.\nI:N - Destination buffers in _drm_do_get_edid() are allocated from the block count, so the flaw is strictly an over-read of the response buffer with no out-of-bounds write or kernel data modification.\nA:H - The memcpy can walk tens of kilobytes past the slab object into unmapped or guarded memory, causing an oops/panic (and an immediate BUG under KASAN/hardened builds), and the device can repeat it at will."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/virtio/virtgpu_vq.c"], "versions": [{"version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "lessThan": "9fc2a017c5d597937e0c28b9a9669844aa796c42", "status": "affected", "versionType": "git"}, {"version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "lessThan": "2757e6e803092cf0aeaf4b735e16b5d3bdc705c5", "status": "affected", "versionType": "git"}, {"version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "lessThan": "35be0e2c6862abcd5e5f5445261f1fd910d4a9b4", "status": "affected", "versionType": "git"}, {"version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "lessThan": "375c1934ef0196d3b6d3a1eae3232bef8dae7bf7", "status": "affected", "versionType": "git"}, {"version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "lessThan": "4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/virtio/virtgpu_vq.c"], "versions": [{"version": "5.0", "status": "affected"}, {"version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "7.2-rc2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42"}, {"url": "https://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5"}, {"url": "https://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4"}, {"url": "https://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7"}, {"url": "https://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd"}], "title": "drm/virtio: bound EDID block reads to the response buffer", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/virtio/virtgpu_vq.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9fc2a017c5d597937e0c28b9a9669844aa796c42", "status": "affected", "version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "versionType": "git"}, {"lessThan": "2757e6e803092cf0aeaf4b735e16b5d3bdc705c5", "status": "affected", "version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "versionType": "git"}, {"lessThan": "35be0e2c6862abcd5e5f5445261f1fd910d4a9b4", "status": "affected", "version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "versionType": "git"}, {"lessThan": "375c1934ef0196d3b6d3a1eae3232bef8dae7bf7", "status": "affected", "version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "versionType": "git"}, {"lessThan": "4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd", "status": "affected", "version": "b4b01b4995fb15b55a2d067eb405917f5ab32709", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/virtio/virtgpu_vq.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.0"}, {"lessThan": "5.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: bound EDID block reads to the response buffer\n\nvirtio_get_edid_block() validates the read offset only against the\ndevice-supplied resp->size field, never against the fixed-size resp->edid\narray. The EDID block index is driven by the device-supplied extension\ncount, so a malicious virtio-gpu backend can advertise a large size\ntogether with a high block count and read far past the array into adjacent\nkernel memory, which is then surfaced in the parsed EDID (an out-of-bounds\nread / info leak).\n\nAlso reject any read whose end exceeds the size of the edid array.\nConforming EDID responses stay within the array and are unaffected."}], "id": "CVE-2026-68255", "lastModified": "2026-08-13T23:17:26.257", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-10T13:20:14.113", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Kernel: Information disclosure via out-of-bounds read in drm/virtio", "id": "2513301", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513301"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/virtio: bound EDID block reads to the response buffer\nvirtio_get_edid_block() validates the read offset only against the\ndevice-supplied resp->size field, never against the fixed-size resp->edid\narray. The EDID block index is driven by the device-supplied extension\ncount, so a malicious virtio-gpu backend can advertise a large size\ntogether with a high block count and read far past the array into adjacent\nkernel memory, which is then surfaced in the parsed EDID (an out-of-bounds\nread / info leak).\nAlso reject any read whose end exceeds the size of the edid array.\nConforming EDID responses stay within the array and are unaffected.", "A flaw was found in the kernel. A malicious virtio-gpu backend can exploit an out-of-bounds read vulnerability in the drm/virtio component of the Linux kernel. By manipulating the Extended Display Identification Data (EDID) block index and advertising a large size, the backend can read beyond the intended buffer into adjacent kernel memory. This leads to information disclosure, where sensitive kernel memory contents are exposed."], "name": "CVE-2026-68255", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:01:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68255\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68255\nhttps://git.kernel.org/stable/c/2757e6e803092cf0aeaf4b735e16b5d3bdc705c5\nhttps://git.kernel.org/stable/c/35be0e2c6862abcd5e5f5445261f1fd910d4a9b4\nhttps://git.kernel.org/stable/c/375c1934ef0196d3b6d3a1eae3232bef8dae7bf7\nhttps://git.kernel.org/stable/c/4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd\nhttps://git.kernel.org/stable/c/9fc2a017c5d597937e0c28b9a9669844aa796c42"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b4b01b4995fb15b55a2d067eb405917f5ab32709,9fc2a017c5d597937e0c28b9a9669844aa796c42)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b4b01b4995fb15b55a2d067eb405917f5ab32709,2757e6e803092cf0aeaf4b735e16b5d3bdc705c5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b4b01b4995fb15b55a2d067eb405917f5ab32709,35be0e2c6862abcd5e5f5445261f1fd910d4a9b4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b4b01b4995fb15b55a2d067eb405917f5ab32709,375c1934ef0196d3b6d3a1eae3232bef8dae7bf7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b4b01b4995fb15b55a2d067eb405917f5ab32709,4e1a53892ba7f8a3e1da6bfc53c83ae7c812dccd)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T14:45:18.124473+00:00", "updated": "2026-08-14T02:30:17.842478+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}