{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98623",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.360Z",
        "datePublished": "2026-10-18T15:19:44.744Z",
        "dateUpdated": "2026-10-19T09:22:51.359Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:22:51.359Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update\n\nIf list_for_each_entry() exits without hitting a break then \"pstate\" is\nnot a valid pstate pointer.  Introduce a \"found\" variable instead.\n\nThe check is reachable from userspace: nvkm_clk_ustate_update() takes the\npstate id straight from the 'pstate' debugfs file, so requesting an id\nthat is not in clk->states - or any id at all when the perf tables are\nbroken and the list is empty - makes the pstate->pstate != req test\ndereference the list head cast to a struct nvkm_pstate, which is an\nout-of-bounds read.\n\n[Francesco: rebased on drm-misc-next, expanded the commit message]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/nouveau/nvkm/subdev/clk/base.c"
                    ],
                    "versions": [
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "db5dd9f47b4df1be322f498d846e9a82940a7390",
                            "status": "affected",
                            "versionType": "git"
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                            "lessThan": "9d550924961f61a491dd95359c63494fa8a23d9f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "492e9cfa12f35f7946ea1b78a19f1f9337d62248",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "a867abcfa85ab487066c3d3008a1ba905da04113",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "5315c7bacfe274ddfe649d9556e9a341ffa812da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "0d096a7f7d79207490858dde731b16da5337e90c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "391517da7fd54ae40e4a7fe1cc696217343b0061",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c856522069755ab9d163a24ac332cd3cb35fe30",
                            "lessThan": "aff09d9e37e02dc60bde79035ac15b136d602259",
                            "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/nouveau/nvkm/subdev/clk/base.c"
                    ],
                    "versions": [
                        {
                            "version": "3.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "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": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.13",
                                    "versionEndExcluding": "5.10.271"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/db5dd9f47b4df1be322f498d846e9a82940a7390"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9d550924961f61a491dd95359c63494fa8a23d9f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/492e9cfa12f35f7946ea1b78a19f1f9337d62248"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a867abcfa85ab487066c3d3008a1ba905da04113"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5315c7bacfe274ddfe649d9556e9a341ffa812da"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d096a7f7d79207490858dde731b16da5337e90c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/391517da7fd54ae40e4a7fe1cc696217343b0061"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aff09d9e37e02dc60bde79035ac15b136d602259"
                }
            ],
            "title": "drm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update",
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