{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68279",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.379Z",
        "datePublished": "2026-08-10T12:02:09.423Z",
        "dateUpdated": "2026-08-23T12:46:16.563Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:46:16.563Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers\n\ndrm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw\nmessage and then unconditionally does:\n\n  memcpy(bytes, &raw->msg[idx], num_bytes);\n\nwithout checking that idx + num_bytes <= raw->curlen. raw->msg[] is\n256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger\nthan the remaining payload, the memcpy reads past the received data\ninto whatever follows in raw->msg[].\n\ndrm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted\nwith a /* TODO check */ comment since the code was introduced).\n\nFix both functions by using a single combined check\n(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,\nit is always >= 0, so this strictly subsumes the simpler idx > curlen\nform and no separate step is needed.\n\n[added missing 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": [
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "185de1d74e658e2edb723ba76fa61903f77d8a68",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "c2fbda0fe0163c55ba3820ee6cea0c6b43622eda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "04d953f50d61e542e94a5977822cc53735f8c0ce",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "533d9e2bede4aeefdc2a0561d7071cfede95958f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "e6ef5455b06cb4e5d181aabcd723791587c79f12",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd",
                            "lessThan": "1a8f537f5a1eeac941f262fe73078d6b08ba83c0",
                            "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": [
                                {
                                    "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/185de1d74e658e2edb723ba76fa61903f77d8a68"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586"
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                    "url": "https://git.kernel.org/stable/c/c2fbda0fe0163c55ba3820ee6cea0c6b43622eda"
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                    "url": "https://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce"
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                },
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                },
                {
                    "url": "https://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0"
                }
            ],
            "title": "drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers",
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                "engine": "bippy-1.2.0"
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}