CVE-2026-64465

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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", 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"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": [{"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:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": 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"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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-64465", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:39:09.199017Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:44:53.011Z"}}]}}

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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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.96", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.39", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.4", "versionStartIncluding": "2.6.35"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "2.6.35"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:56:10.537Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64465", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:44:53.011Z", "dateReserved": "2026-07-19T15:36:31.790Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-25T08:51:31.160Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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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."}], "id": "CVE-2026-64465", "lastModified": "2026-11-12T17:51:23.813", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64465", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:39:09.199017Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:31.763", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10666ac9c552990204e791af653abf8e9d9ff619"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1e45aa722c4ce5663e987102aac18c8ad6a83fdd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42c37c4b75d38b51d84f31a8e29427f5e06a7c2a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/93cd037da94fcb93183bfb2457e3a56d3eb4c8f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d107eb316144c5fb958486e7fe604cd7f1b35cda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e623e4a203f56d5c57519a9a3cb29600551534ad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f7b022ae07685e7526fc39f387ce65b5d309dd3b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f90586129cf9e1fbdb718ef602eea3f15dc1c31c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: xhci: Fix sleep in atomic context in xhci_free_streams()", "id": "2507103", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507103"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-413", "details": ["A flaw was found in the Linux kernel's USB xHCI (eXtensible Host Controller Interface) driver. When a USB device with active stream endpoints is disconnected, the system attempts to free stream resources while holding a lock with interrupts disabled. This can lead to a situation where a function that is designed to sleep is called in an atomic context, triggering a kernel bug and causing a system crash. This vulnerability could allow a local attacker to cause a Denial of Service (DoS)."], "name": "CVE-2026-64465", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64465\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64465\nhttps://lore.kernel.org/linux-cve-announce/2026072544-CVE-2026-64465-2baa@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,e623e4a203f56d5c57519a9a3cb29600551534ad)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,d107eb316144c5fb958486e7fe604cd7f1b35cda)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,1e45aa722c4ce5663e987102aac18c8ad6a83fdd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,10666ac9c552990204e791af653abf8e9d9ff619)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,f7b022ae07685e7526fc39f387ce65b5d309dd3b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,f90586129cf9e1fbdb718ef602eea3f15dc1c31c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,93cd037da94fcb93183bfb2457e3a56d3eb4c8f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8df75f42f8e67e2851cdcf6da91640fb881defd1,42c37c4b75d38b51d84f31a8e29427f5e06a7c2a)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.35"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.35)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T21:30:17.487198+00:00", "updated": "2026-08-05T02:45:17.231940+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}