{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89821",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.768Z",
        "datePublished": "2026-09-16T10:30:53.689Z",
        "dateUpdated": "2026-10-19T08:53:15.267Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:53:15.267Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: avoid divide-by-zero in __is_lut_linear()\n\n__is_lut_linear() computes the expected value of each entry with\n\n\texpected = i * MAX_DRM_LUT_VALUE / (size - 1);\n\nIf it is ever called with a single-entry LUT, size - 1 is zero and the\nkernel takes a divide error (#DE). A LUT with fewer than two entries\ncannot describe a linear mapping anyway, so return false early instead\nof dividing by zero."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c"
                    ],
                    "versions": [
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "2320626425f3af3a25b8afb6876f205b1c6d4e64",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "d1e06d5dc8f12451ce71dc068342660a34476084",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "c127ace7af2b40107947a6504391f94d6fd21734",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "5f18cd1ba873e751bf5547407ad44ea34adfbe2f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "ee28fafb50f58b847509b5240b431ddec673bdfe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "15ee43aad0df43dfd1dbb32e7d5b951745c4b87f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "086247a4b2fba49800b27807f22bb894cd8363fb",
                            "lessThan": "4f40873f8a4107df2b9c8e68c947c4fd0cd519d2",
                            "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/amd/display/amdgpu_dm/amdgpu_dm_color.c"
                    ],
                    "versions": [
                        {
                            "version": "4.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "4.17",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
                                    "versionEndExcluding": "7.2.5"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.17",
                                    "versionEndExcluding": "7.3"
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                            ]
                        }
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2320626425f3af3a25b8afb6876f205b1c6d4e64"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1e06d5dc8f12451ce71dc068342660a34476084"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c127ace7af2b40107947a6504391f94d6fd21734"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4d5ee095a58461b2446d7a6eb0c14c2fe3eaab44"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5f18cd1ba873e751bf5547407ad44ea34adfbe2f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ee28fafb50f58b847509b5240b431ddec673bdfe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/15ee43aad0df43dfd1dbb32e7d5b951745c4b87f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4f40873f8a4107df2b9c8e68c947c4fd0cd519d2"
                }
            ],
            "title": "drm/amd/display: avoid divide-by-zero in __is_lut_linear()",
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}