{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64329",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.780Z",
        "datePublished": "2026-07-25T08:49:57.098Z",
        "dateUpdated": "2026-08-17T04:53:31.661Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:53:31.661Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove\n\nThe threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(),\nwhich on a connector-change event calls ucsi_connector_change() and\nschedules connector work.  In ucsi_ccg_remove(), ucsi_destroy() frees\nuc->ucsi (kfree) before free_irq() is called, so a handler invocation\nalready in flight may access the freed object after ucsi_destroy().\n\n  CPU 0 (remove)            | CPU 1 (threaded IRQ)\n    ucsi_destroy(uc->ucsi)  |   ccg_irq_handler()\n      kfree(ucsi) // FREE   |     ucsi_notify_common(uc->ucsi) // USE\n\nMove free_irq() before ucsi_destroy() in the remove path.  It is kept\nafter ucsi_unregister(): ucsi_unregister() cancels connector work whose\nhandler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(),\nwhich waits for a completion that is signalled from the IRQ handler, so\nthe IRQ must stay active until that work has been cancelled.\n\nThe probe error path already orders free_irq() before ucsi_destroy().\n\nThis bug was found by static analysis."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/typec/ucsi/ucsi_ccg.c"
                    ],
                    "versions": [
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "f1adeb1ff8bef1467d6961059810795d02bbad5d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "99381e762273a2410a3f0216000be32b013c0ea9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "1a160076d3d0dcd4a98a4599ad96eec0790b099b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "c32df11147822d22facee8fa30c2e8971d12f426",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "86c9ee928c4a370e323e432aaf8dca79c4ba7c85",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "f5c772b76bbd95de8be51cf849c6098f6af6fcf9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "dbb500bad02146b388041877574829016591ddc8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2",
                            "lessThan": "1f0bdc2884b67de337215079bba166df0cdf4ac5",
                            "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/usb/typec/ucsi/ucsi_ccg.c"
                    ],
                    "versions": [
                        {
                            "version": "5.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "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": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
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                                    "versionStartIncluding": "5.5",
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                                    "versionStartIncluding": "5.5",
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                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.1.4"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.5",
                                    "versionEndExcluding": "7.2"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426"
                },
                {
                    "url": "https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5"
                }
            ],
            "title": "usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}