{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64376",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.784Z",
        "datePublished": "2026-07-25T08:50:27.577Z",
        "dateUpdated": "2026-08-17T04:54:27.297Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:54:27.297Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: fix device reference leak in firmware_upload_register()\n\nfirmware_upload_register()\n  -> fw_create_instance()\n     -> device_initialize()\n\nAfter fw_create_instance() succeeds, the lifetime of the embedded struct\ndevice is expected to be managed through the device core reference\ncounting, since fw_create_instance() has already called\ndevice_initialize().\n\nIn firmware_upload_register(), if alloc_lookup_fw_priv() fails after\nfw_create_instance() succeeds, the code reaches free_fw_sysfs and frees\nfw_sysfs directly instead of releasing the device reference with\nput_device(). This may leave the reference count of the embedded struct\ndevice unbalanced, resulting in a refcount leak.\n\nThe issue was identified by a static analysis tool I developed and\nconfirmed by manual review. Fix this by using put_device(fw_dev) in the\nfailure path and letting fw_dev_release() handle the final cleanup,\ninstead of freeing the instance directly from the error path."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/base/firmware_loader/sysfs_upload.c"
                    ],
                    "versions": [
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "517676ec7dfca064e08f94007a4abd21969de0a0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "46d403da376a8b7c1187193294953816e1a8d7fe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "2619b47a0c8114eef980a56ade7e3ef4b58eb384",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "92f41769e5fd16bcd9ba97500d0517332e0a5b45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "15432f19562fdb9199cce6d9fc24db12c71ed574",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97730bbb242cde22b7140acd202ffd88823886c9",
                            "lessThan": "896df22ee57648b0c505bd76ddbc6b2341834696",
                            "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/base/firmware_loader/sysfs_upload.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
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                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.178"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/517676ec7dfca064e08f94007a4abd21969de0a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/46d403da376a8b7c1187193294953816e1a8d7fe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2619b47a0c8114eef980a56ade7e3ef4b58eb384"
                },
                {
                    "url": "https://git.kernel.org/stable/c/92f41769e5fd16bcd9ba97500d0517332e0a5b45"
                },
                {
                    "url": "https://git.kernel.org/stable/c/15432f19562fdb9199cce6d9fc24db12c71ed574"
                },
                {
                    "url": "https://git.kernel.org/stable/c/896df22ee57648b0c505bd76ddbc6b2341834696"
                }
            ],
            "title": "firmware_loader: fix device reference leak in firmware_upload_register()",
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}