{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74647",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.923Z",
        "datePublished": "2026-08-22T15:32:24.127Z",
        "dateUpdated": "2026-08-22T15:32:24.127Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-22T15:32:24.127Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Remove buffer from list prior to unmap operation\n\nfastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is\ngetting removed from the list after it is unmapped from DSP. This can\ncreate potential race conditions if multiple threads invoke unmap\nconcurrently, where one thread may remove the entry from the list while\nanother thread's unmap operation is still ongoing.\n\nFix this by removing the buffer entry from the list before calling the\nunmap operation. If the unmap fails, the entry is re-added to the list\nso that userspace can retry the unmap, or alternatively, the buffer\nwill be cleaned up during device release when the DSP process is torn\ndown and all DSP-side mappings are freed along with remaining buffers\nin the list."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/misc/fastrpc.c"
                    ],
                    "versions": [
                        {
                            "version": "2419e55e532de14fdf336e09e453aa2831c73a25",
                            "lessThan": "97273624f7b356eaf8261609a75cfcb8738a165a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2419e55e532de14fdf336e09e453aa2831c73a25",
                            "lessThan": "fe70329055977fc1e8dc6291318d0dd75470795a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2419e55e532de14fdf336e09e453aa2831c73a25",
                            "lessThan": "9bf22a7d950cec2d1efeca7f16bb20fcca84c36a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2419e55e532de14fdf336e09e453aa2831c73a25",
                            "lessThan": "0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2419e55e532de14fdf336e09e453aa2831c73a25",
                            "lessThan": "6102ceb4eab845743ee57acd3863fbd06e93c927",
                            "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/misc/fastrpc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "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": "5.5",
                                    "versionEndExcluding": "6.6.152"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.12.104"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "6.18.45"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.1.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/97273624f7b356eaf8261609a75cfcb8738a165a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fe70329055977fc1e8dc6291318d0dd75470795a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9bf22a7d950cec2d1efeca7f16bb20fcca84c36a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6102ceb4eab845743ee57acd3863fbd06e93c927"
                }
            ],
            "title": "misc: fastrpc: Remove buffer from list prior to unmap operation",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}