CVE-2024-26659

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Yet the driver makes such assumption and releases the TD,\nallowing the remaining TRBs to be freed or overwritten by new TDs.\n\nThe xHC should also report completion of the final TRB due to its IOC\nflag being set by us, regardless of prior errors. This event cannot\nbe recognized if the TD has already been freed earlier, resulting in\n\"Transfer event TRB DMA ptr not part of current TD\" error message.\n\nFix this by reusing the logic for processing isoc Transaction Errors.\nThis also handles hosts which fail to report the final completion.\n\nFix transfer length reporting on Babble errors. They may be caused by\ndevice malfunction, no guarantee that the buffer has been filled."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The buggy handler is reached by driving isochronous USB traffic from a local process \u2014 ALSA USB-audio, uvcvideo/V4L2, or raw usbfs `USBDEVFS_SUBMITURB` \u2014 on an already-attached device, with no physical access required. Consistent with the in-tree scoring of the analogous xhci isoc ring bugs (CVE-2025-37882, CVE-2025-22022).\nAC:L - `usb_submit_urb()` only bounds isoc frame lengths from above, so short isoc IN frames reliably provoke Isoch Buffer Overrun, and multi-TRB isoc TDs are the normal case for high-bandwidth SuperSpeed streams; the condition can be re-triggered every service interval. A malicious attached device can force babble deterministically.\nPR:L - Requires only an unprivileged local account with access to an isochronous USB endpoint (video/audio group membership or console-seat uaccess ACLs on /dev/bus/usb, /dev/video*, /dev/snd/*). No root or CAP_SYS_ADMIN is needed.\nUI:N - Once an isochronous-capable device is present, the attacker submits the URBs themselves; no victim action is required to trigger the premature TD giveback.\nS:U - The corruption and its impact are confined to the kernel's own memory and the xHCI host controller driver \u2014 the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The TD is released while the xHC still owns its remaining TRBs, so the controller keeps DMAing into a buffer that was given back and may be reallocated to another subsystem; that reallocated content is then reported back through the URB, and stale TRBs let the HC read reused memory \u2014 an arbitrary kernel-memory disclosure primitive.\nI:H - This is a use-after-free write: the xHC DMAs device-supplied data into freed/reallocated kernel memory, and freed TRB slots overwritten by new TDs let the controller act on torn TRBs with mismatched addresses and lengths, giving a corruption primitive leveragable for control-flow hijack.\nA:H - The missing final-TRB event produces \"Transfer event TRB DMA ptr not part of current TD\" and `-ESHUTDOWN`, desynchronizing driver and hardware and reaching `xhci_hc_died()`/`usb_hc_died()`, which kills every URB and all devices on the controller; the DMA-into-freed-memory and IOMMU-fault paths additionally cause kernel crashes."}]}], "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-ring.c"], "versions": [{"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "696e4112e5c1ee61996198f0ebb6ca3fab55166e", "status": "affected", "versionType": "git"}, {"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "2aa7bcfdbb46241c701811bbc0d64d7884e3346c", "status": "affected", "versionType": "git"}, {"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3", "status": "affected", "versionType": "git"}, {"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "f5e7ffa9269a448a720e21f1ed1384d118298c97", "status": "affected", "versionType": "git"}, {"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "418456c0ce56209610523f21734c5612ee634134", "status": "affected", "versionType": "git"}, {"version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "7c4650ded49e5b88929ecbbb631efb8b0838e811", "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-ring.c"], "versions": [{"version": "2.6.36", "status": "affected"}, {"version": "0", "lessThan": "2.6.36", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.213", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.152", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.82", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.17", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, 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Consistent with the in-tree scoring of the analogous xhci isoc ring bugs (CVE-2025-37882, CVE-2025-22022).\nAC:L - `usb_submit_urb()` only bounds isoc frame lengths from above, so short isoc IN frames reliably provoke Isoch Buffer Overrun, and multi-TRB isoc TDs are the normal case for high-bandwidth SuperSpeed streams; the condition can be re-triggered every service interval. A malicious attached device can force babble deterministically.\nPR:L - Requires only an unprivileged local account with access to an isochronous USB endpoint (video/audio group membership or console-seat uaccess ACLs on /dev/bus/usb, /dev/video*, /dev/snd/*). No root or CAP_SYS_ADMIN is needed.\nUI:N - Once an isochronous-capable device is present, the attacker submits the URBs themselves; no victim action is required to trigger the premature TD giveback.\nS:U - The corruption and its impact are confined to the kernel's own memory and the xHCI host controller driver \u2014 the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The TD is released while the xHC still owns its remaining TRBs, so the controller keeps DMAing into a buffer that was given back and may be reallocated to another subsystem; that reallocated content is then reported back through the URB, and stale TRBs let the HC read reused memory \u2014 an arbitrary kernel-memory disclosure primitive.\nI:H - This is a use-after-free write: the xHC DMAs device-supplied data into freed/reallocated kernel memory, and freed TRB slots overwritten by new TDs let the controller act on torn TRBs with mismatched addresses and lengths, giving a corruption primitive leveragable for control-flow hijack.\nA:H - The missing final-TRB event produces \"Transfer event TRB DMA ptr not part of current TD\" and `-ESHUTDOWN`, desynchronizing driver and hardware and reaching `xhci_hc_died()`/`usb_hc_died()`, which kills every URB and all devices on the controller; the DMA-into-freed-memory and IOMMU-fault paths additionally cause kernel crashes."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "696e4112e5c1ee61996198f0ebb6ca3fab55166e", "versionType": "git"}, {"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "2aa7bcfdbb46241c701811bbc0d64d7884e3346c", "versionType": "git"}, {"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3", "versionType": "git"}, {"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "f5e7ffa9269a448a720e21f1ed1384d118298c97", "versionType": "git"}, {"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "418456c0ce56209610523f21734c5612ee634134", "versionType": "git"}, {"status": "affected", "version": "04e51901dd44f40a5a385ced897f6bca87d5f40a", "lessThan": "7c4650ded49e5b88929ecbbb631efb8b0838e811", "versionType": "git"}], "programFiles": ["drivers/usb/host/xhci-ring.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.36"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.36", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.213", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.152", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.82", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.17", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.5", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/host/xhci-ring.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e"}, {"url": "https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c"}, {"url": "https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3"}, {"url": "https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97"}, {"url": "https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134"}, {"url": "https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: handle isoc Babble and Buffer Overrun events properly\n\nxHCI 4.9 explicitly forbids assuming that the xHC has released its\nownership of a multi-TRB TD when it reports an error on one of the\nearly TRBs. Yet the driver makes such assumption and releases the TD,\nallowing the remaining TRBs to be freed or overwritten by new TDs.\n\nThe xHC should also report completion of the final TRB due to its IOC\nflag being set by us, regardless of prior errors. This event cannot\nbe recognized if the TD has already been freed earlier, resulting in\n\"Transfer event TRB DMA ptr not part of current TD\" error message.\n\nFix this by reusing the logic for processing isoc Transaction Errors.\nThis also handles hosts which fail to report the final completion.\n\nFix transfer length reporting on Babble errors. They may be caused by\ndevice malfunction, no guarantee that the buffer has been filled."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.213", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.152", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.82", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.17", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.5", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "2.6.36"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:26:35.521Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26659", "state": "PUBLISHED", "dateUpdated": "2026-10-15T00:38:24.321Z", "dateReserved": "2024-02-19T14:20:24.147Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-02T06:22:09.241Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Yet the driver makes such assumption and releases the TD,\nallowing the remaining TRBs to be freed or overwritten by new TDs.\n\nThe xHC should also report completion of the final TRB due to its IOC\nflag being set by us, regardless of prior errors. This event cannot\nbe recognized if the TD has already been freed earlier, resulting in\n\"Transfer event TRB DMA ptr not part of current TD\" error message.\n\nFix this by reusing the logic for processing isoc Transaction Errors.\nThis also handles hosts which fail to report the final completion.\n\nFix transfer length reporting on Babble errors. They may be caused by\ndevice malfunction, no guarantee that the buffer has been filled."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: xhci: maneja correctamente los eventos isoc Babble y Buffer Overrun xHCI 4.9 proh\u00edbe expl\u00edcitamente suponer que xHC ha liberado su propiedad de un TD multi-TRB cuando informa un error en uno de los primeros TRB. Sin embargo, el conductor hace tal suposici\u00f3n y libera el TD, permitiendo que los TRB restantes sean liberados o sobrescritos por nuevos TD. El xHC tambi\u00e9n debe informar la finalizaci\u00f3n del TRB final debido a que nosotros establecimos la bandera del COI, independientemente de los errores anteriores. Este evento no se puede reconocer si el TD ya se liber\u00f3 anteriormente, lo que genera el mensaje de error \"Evento de transferencia TRB DMA ptr no forma parte del TD actual\". Solucione este problema reutilizando la l\u00f3gica para procesar errores de transacci\u00f3n isoc. Esto tambi\u00e9n maneja los hosts que no informan la finalizaci\u00f3n final. Se corrigi\u00f3 el informe de duraci\u00f3n de la transferencia sobre errores de Babble. Pueden deberse a un mal funcionamiento del dispositivo, no hay garant\u00eda de que se haya llenado el b\u00fafer."}], "id": "CVE-2024-26659", "lastModified": "2026-10-15T01:17:22.023", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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-2024-26659", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-17T19:31:25.014647Z", "version": "2.0.3"}}]}, "published": "2024-04-02T07:15:42.980", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2aa7bcfdbb46241c701811bbc0d64d7884e3346c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e3ec80ea7ba58bbb210e83b5a0afefee7c171d3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/418456c0ce56209610523f21734c5612ee634134"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/696e4112e5c1ee61996198f0ebb6ca3fab55166e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7c4650ded49e5b88929ecbbb631efb8b0838e811"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f5e7ffa9269a448a720e21f1ed1384d118298c97"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}], "bugzilla": {"description": "kernel: xhci: handle isoc Babble and Buffer Overrun events properly", "id": "2272780", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272780"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-119", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nxhci: handle isoc Babble and Buffer Overrun events properly\nxHCI 4.9 explicitly forbids assuming that the xHC has released its\nownership of a multi-TRB TD when it reports an error on one of the\nearly TRBs. Yet the driver makes such assumption and releases the TD,\nallowing the remaining TRBs to be freed or overwritten by new TDs.\nThe xHC should also report completion of the final TRB due to its IOC\nflag being set by us, regardless of prior errors. This event cannot\nbe recognized if the TD has already been freed earlier, resulting in\n\"Transfer event TRB DMA ptr not part of current TD\" error message.\nFix this by reusing the logic for processing isoc Transaction Errors.\nThis also handles hosts which fail to report the final completion.\nFix transfer length reporting on Babble errors. They may be caused by\ndevice malfunction, no guarantee that the buffer has been filled.", "A flaw was found in the Linux kernel related to the Extensible Host Controller Interface (xHCI) subsystem, specifically how it handles certain events. The issue arises when the xHCI driver improperly handles isochronous (isoc) Babble and Buffer Overrun events. The vulnerability occurs because the xHCI driver incorrectly assumes that the xHC (host controller) has released its ownership of a multi-TRB (Transfer Request Block) TD (Transfer Descriptor) after reporting an error on an early TRB. This assumption leads to the premature release of the TD, allowing remaining TRBs to be freed or overwritten, which can cause system instability or crashes."], "mitigation": {"lang": "en:us", "value": "There is no known mitigation to this problem. Red Hat recommends updating to the latest kernel version to fix the problem."}, "name": "CVE-2024-26659", "package_state": [{"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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "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": "2024-04-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26659\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26659\nhttps://lore.kernel.org/linux-cve-announce/2024040222-CVE-2024-26659-e4f6@gregkh/T"], "statement": "Red Hat Product Security has classified the severity of this vulnerability as Moderate due to the specific prerequisites required for exploitation. Successful exploitation generally necessitates local access to the system with elevated permissions to interact with the Extensible Host Controller Interface (xHCI) driver, which effectively translates to root-level access.", "threat_severity": "Low"}

{}