{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80698",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.786Z",
        "datePublished": "2026-08-28T06:53:02.829Z",
        "dateUpdated": "2026-10-21T12:46:57.267Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:46:57.267Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix double free of wq, engine, and group structs\n\nThe release callbacks for wq, engine, and group devices\n(idxd_conf_wq_release, idxd_conf_engine_release,\nidxd_conf_group_release) each call kfree() on the enclosing struct.\nThe setup error paths and cleanup functions also call kfree()\nexplicitly after put_device(), producing a double free whenever\nput_device() drops the reference count to zero and fires the release.\n\nIn the setup functions, device_initialize() is called before\ndevice_add(), so the reference count is exactly 1 at the error sites.\nput_device() unconditionally fires the release, which frees the struct;\nthe subsequent explicit kfree() then operates on freed memory.\n\nFor idxd_setup_wqs(), the wq release callback also owns opcap_bmap\nand wqcfg. The error unwind additionally freed those fields explicitly\nbefore calling put_device(), causing further double frees on both.\n\nRemove the redundant explicit kfree() calls from all setup error paths\nand cleanup functions for wq, engine, and group structs, delegating\nsole ownership of those allocations to the release callbacks."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dma/idxd/init.c"
                    ],
                    "versions": [
                        {
                            "version": "7c5dd23e57c14cf7177b8a5e0fd08916e0c60005",
                            "lessThan": "84cf00b1376c717e55d704dc259483e822ae1b34",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c5dd23e57c14cf7177b8a5e0fd08916e0c60005",
                            "lessThan": "38208445c41a6164e26748c600f954296991364d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c5dd23e57c14cf7177b8a5e0fd08916e0c60005",
                            "lessThan": "63844dc03960b09b36746eda636c08f1479407ce",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c5dd23e57c14cf7177b8a5e0fd08916e0c60005",
                            "lessThan": "c93a9f652b7373ac8ee5bfcc18a9af76959b6c6c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7c5dd23e57c14cf7177b8a5e0fd08916e0c60005",
                            "lessThan": "ec2d428b2e32dd157de8f86a86dd85c5b2c8f45c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "394e179f51fce06d6bb8ca5af8fa53f33c718cf4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b09ad63775f58a8de3e228f59fb9543bfd964c9c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "26c219e7522c494f7865a928c81ced84cc7db3ae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "35ea8721d9e6e74c6847cf4d6c27e883b00b0331",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e6f86fe368cdc14764833a6e8bb59f7a85a40e06",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1c28fd5f94d8996f7dd3805bd6a16ed46a5d0886",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.11.22",
                            "lessThan": "5.12",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.12.5",
                            "lessThan": "5.13",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/dma/idxd/init.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "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": "5.13",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                },
                                {
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                                    "versionStartIncluding": "5.11.22"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.12.5"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/84cf00b1376c717e55d704dc259483e822ae1b34"
                },
                {
                    "url": "https://git.kernel.org/stable/c/38208445c41a6164e26748c600f954296991364d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/63844dc03960b09b36746eda636c08f1479407ce"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c93a9f652b7373ac8ee5bfcc18a9af76959b6c6c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ec2d428b2e32dd157de8f86a86dd85c5b2c8f45c"
                }
            ],
            "title": "dmaengine: idxd: fix double free of wq, engine, and group structs",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}