{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64465",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.790Z",
        "datePublished": "2026-07-25T08:51:31.160Z",
        "dateUpdated": "2026-08-17T04:56:10.537Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:56:10.537Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix sleep in atomic context in xhci_free_streams()\n\nWhen a USB device with active stream endpoints is disconnected,\nxhci_free_streams() is called from the hub_event workqueue to\nfree the stream resources.  It calls xhci_free_stream_info()\nwhile holding xhci->lock with irqs disabled.\n\nxhci_free_stream_info() invokes xhci_free_stream_ctx(), which\ncalls dma_free_coherent() for large stream context arrays.\n\ndma_free_coherent() can sleep (e.g. via vunmap), triggering\na BUG when called from atomic context.\n\nCall trace:\n dma_free_attrs+0x174/0x220\n xhci_free_stream_info+0xd0/0x11c\n xhci_free_streams+0x278/0x37c\n usb_free_streams+0x98/0xc0\n usb_unbind_interface+0x1b8/0x2f8\n device_release_driver_internal+0x1d4/0x2cc\n device_release_driver+0x18/0x28\n bus_remove_device+0x160/0x1a4\n device_del+0x1ec/0x350\n usb_disable_device+0x98/0x214\n usb_disconnect+0xf0/0x35c\n hub_event+0xab4/0x19ec\n process_one_work+0x278/0x63c\n\nFix this by saving the stream_info pointers and clearing the\nep references under the lock, then calling xhci_free_stream_info()\noutside the lock where sleeping is allowed."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/usb/host/xhci.c"
                    ],
                    "versions": [
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "e623e4a203f56d5c57519a9a3cb29600551534ad",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "d107eb316144c5fb958486e7fe604cd7f1b35cda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "1e45aa722c4ce5663e987102aac18c8ad6a83fdd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "10666ac9c552990204e791af653abf8e9d9ff619",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "f7b022ae07685e7526fc39f387ce65b5d309dd3b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "f90586129cf9e1fbdb718ef602eea3f15dc1c31c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "93cd037da94fcb93183bfb2457e3a56d3eb4c8f4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8df75f42f8e67e2851cdcf6da91640fb881defd1",
                            "lessThan": "42c37c4b75d38b51d84f31a8e29427f5e06a7c2a",
                            "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/host/xhci.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.35",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.35",
                            "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": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e623e4a203f56d5c57519a9a3cb29600551534ad"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d107eb316144c5fb958486e7fe604cd7f1b35cda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1e45aa722c4ce5663e987102aac18c8ad6a83fdd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/10666ac9c552990204e791af653abf8e9d9ff619"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f7b022ae07685e7526fc39f387ce65b5d309dd3b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f90586129cf9e1fbdb718ef602eea3f15dc1c31c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/93cd037da94fcb93183bfb2457e3a56d3eb4c8f4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/42c37c4b75d38b51d84f31a8e29427f5e06a7c2a"
                }
            ],
            "title": "usb: xhci: Fix sleep in atomic context in xhci_free_streams()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}