{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68277",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.379Z",
        "datePublished": "2026-08-10T12:01:53.085Z",
        "dateUpdated": "2026-08-23T12:46:14.372Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:46:14.372Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers\n\nThree sideband reply parsers read 16-bit fields as:\n\n  val = (raw->msg[idx] << 8) | (raw->msg[idx+1]);\n\nand check bounds only after the fact. When idx == raw->curlen,\nraw->msg[idx+1] reads one byte past the received message data into\nthe following struct fields (curchunk_len, curchunk_idx, curlen).\n\nAffected functions:\n - drm_dp_sideband_parse_enum_path_resources_ack()\n   full_payload_bw_number and avail_payload_bw_number fields\n - drm_dp_sideband_parse_allocate_payload_ack()\n   allocated_pbn field\n - drm_dp_sideband_parse_query_payload_ack()\n   allocated_pbn field\n\nFix by using a single combined check (idx + 2 > curlen) before each\n2-byte read. Since the check is strictly tighter than idx > curlen,\nno separate step is needed.\n\n[added fixes tag]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/display/drm_dp_mst_topology.c"
                    ],
                    "versions": [
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                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "c1f72a13d54ffd16647d3fa540d961f5deba8790",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "192e146c2d57ad033b0d418ec64ee390f8dc074e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "6e3107e6522109a07fc9bb0fc4ec463f1982e113",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "bdf0508b1e6785d4a8982c637e97e68d60b47d7b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "0bcd7675c69a2462a8531fcd9e4d096e9c7ec5df",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "d5c70523cafa26ad2c7a37b612849abe2683baa8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "68a624416d1dd481b3e5b7ea0e8a070a9b8a2c73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "6b89ba3dba2f583626fb693e47e951ffb8bf591f",
                            "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/display/drm_dp_mst_topology.c"
                    ],
                    "versions": [
                        {
                            "version": "3.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.266",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.217",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "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",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "5.10.266"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.17",
                                    "versionEndExcluding": "5.15.217"
                                },
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c1f72a13d54ffd16647d3fa540d961f5deba8790"
                },
                {
                    "url": "https://git.kernel.org/stable/c/192e146c2d57ad033b0d418ec64ee390f8dc074e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6e3107e6522109a07fc9bb0fc4ec463f1982e113"
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                },
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                    "url": "https://git.kernel.org/stable/c/0bcd7675c69a2462a8531fcd9e4d096e9c7ec5df"
                },
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                    "url": "https://git.kernel.org/stable/c/d5c70523cafa26ad2c7a37b612849abe2683baa8"
                },
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                },
                {
                    "url": "https://git.kernel.org/stable/c/6b89ba3dba2f583626fb693e47e951ffb8bf591f"
                }
            ],
            "title": "drm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers",
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}