{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68271",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.378Z",
        "datePublished": "2026-08-10T12:01:46.534Z",
        "dateUpdated": "2026-08-17T05:02:04.681Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:02:04.681Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix reversed error cleanup order in ucopy functions\n\nnouveau_uvmm_vm_bind_ucopy() and nouveau_exec_ucopy() place their error\ncleanup labels in allocation order rather than reverse allocation order.\nOn a u_memcpya() failure for in_sync.s, the goto to err_free_ops (or\nerr_free_pushs) frees the first allocation and then falls through to\nerr_free_ins, which calls u_free() on args->in_sync.s.\n\nSince args->in_sync.s still holds the ERR_PTR returned by the failed\nu_memcpya(), and ERR_PTR values are not caught by ZERO_OR_NULL_PTR(),\nkvfree() proceeds to dereference it, which can result in a kernel oops.\nA failure for out_sync.s instead jumps to err_free_ins and skips freeing\nthe first allocation, leading to a memory leak.\n\nFix by swapping the cleanup label order so resources are freed in the\ncorrect reverse allocation sequence."
                }
            ],
            "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/nouveau_exec.c",
                        "drivers/gpu/drm/nouveau/nouveau_uvmm.c"
                    ],
                    "versions": [
                        {
                            "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
                            "lessThan": "2473ac314387a5def7244eb6d6a345934ed140bf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
                            "lessThan": "e15c25c7972d38a9f6bf8c3f7f29179a67263eba",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
                            "lessThan": "4e109faa9ea2b6c04cc5a99e76db3126575a59d1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
                            "lessThan": "ebbaf64d2635d1e78196c067fa8fa582a7dc17f7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b88baab828713ce0b49b185444b2ee83bed373a8",
                            "lessThan": "ab99ead646b1b833ecd57fe577a2816f2e848167",
                            "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/nouveau_exec.c",
                        "drivers/gpu/drm/nouveau/nouveau_uvmm.c"
                    ],
                    "versions": [
                        {
                            "version": "6.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.6",
                            "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": "6.6",
                                    "versionEndExcluding": "6.6.148"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.12.101"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "6.18.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.1.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/2473ac314387a5def7244eb6d6a345934ed140bf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e15c25c7972d38a9f6bf8c3f7f29179a67263eba"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4e109faa9ea2b6c04cc5a99e76db3126575a59d1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ebbaf64d2635d1e78196c067fa8fa582a7dc17f7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ab99ead646b1b833ecd57fe577a2816f2e848167"
                }
            ],
            "title": "drm/nouveau: fix reversed error cleanup order in ucopy functions",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}