CVE-2026-64014

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The existing\nadjustments shave at most 0x100 / 0x80 off, so the loop bound can still\nreach roughly 0xfeff. The URB transfer buffer for NEXIO is rept_size\n(1024) bytes from usb_alloc_coherent(), with the first 7 occupied by the\npacked header \u2014 so packet->data[] has 1017 valid bytes. read_data()\ncallbacks are not given urb->actual_length, and nothing else bounds the\nwalk.\n\nA device that lies about its length can get a ~64 KiB out-of-bounds read\npast the coherent DMA allocation. The first index whose byte exceeds\nNEXIO_THRESHOLD lands in begin_x / begin_y and from there into the\nreported touch coordinates, so adjacent kernel memory contents leak to\nuserspace as ABS_X / ABS_Y events. Far enough out, the read can also\nhit an unmapped page and fault.\n\nFix this all by clamping data_len to the buffer's data[] capacity and\nx_len to data_len."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/input/touchscreen/usbtouchscreen.c"], "versions": [{"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "45c829e5eb3b974282bae50b7cca2cc891f74f0b", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "e7cdcb266ba06d8480809b78ab8bb2bf8ff51ccb", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "95f47331dfde243f93e679ce70bd0c24b37c683d", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "d883312061ccde8c536595998aaf687ec070077c", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "103d2de9f505f56da173e43f12dba62f92620278", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "0ca809ea8e0355299266c46e5f1755040aa8dcf3", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "7585b6aa55d8ac85ad22f522e1059f93507727b6", "status": "affected", "versionType": "git"}, {"version": "5197424cdcccd2b0b1922babb93969b2515c43ce", "lessThan": "2905281cbda52ec9df540113b35b835feb5fafd3", "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/input/touchscreen/usbtouchscreen.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "2.6.34", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/45c829e5eb3b974282bae50b7cca2cc891f74f0b"}, {"url": "https://git.kernel.org/stable/c/e7cdcb266ba06d8480809b78ab8bb2bf8ff51ccb"}, {"url": "https://git.kernel.org/stable/c/95f47331dfde243f93e679ce70bd0c24b37c683d"}, {"url": "https://git.kernel.org/stable/c/d883312061ccde8c536595998aaf687ec070077c"}, {"url": "https://git.kernel.org/stable/c/103d2de9f505f56da173e43f12dba62f92620278"}, {"url": "https://git.kernel.org/stable/c/0ca809ea8e0355299266c46e5f1755040aa8dcf3"}, {"url": "https://git.kernel.org/stable/c/7585b6aa55d8ac85ad22f522e1059f93507727b6"}, {"url": "https://git.kernel.org/stable/c/2905281cbda52ec9df540113b35b835feb5fafd3"}], "title": "Input: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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{"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.210", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.176", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.143", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.93", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.35", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8EFA81C6-11F5-426B-A795-3F05B59387EE", "versionEndExcluding": "5.10.259", "versionStartIncluding": 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"vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size\n\nnexio_read_data() pulls data_len and x_len from a packed __be16 header\nin the device's interrupt packet and then walks packet->data[0..x_len)\nand packet->data[x_len..data_len) comparing each byte against a\nthreshold.\n\nBoth fields are 16-bit on the wire (max 65535). The existing\nadjustments shave at most 0x100 / 0x80 off, so the loop bound can still\nreach roughly 0xfeff. The URB transfer buffer for NEXIO is rept_size\n(1024) bytes from usb_alloc_coherent(), with the first 7 occupied by the\npacked header \u2014 so packet->data[] has 1017 valid bytes. read_data()\ncallbacks are not given urb->actual_length, and nothing else bounds the\nwalk.\n\nA device that lies about its length can get a ~64 KiB out-of-bounds read\npast the coherent DMA allocation. The first index whose byte exceeds\nNEXIO_THRESHOLD lands in begin_x / begin_y and from there into the\nreported touch coordinates, so adjacent kernel memory contents leak to\nuserspace as ABS_X / ABS_Y events. Far enough out, the read can also\nhit an unmapped page and fault.\n\nFix this all by clamping data_len to the buffer's data[] capacity and\nx_len to data_len."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEntrada: usbtouchscreen - limitar NEXIO data_len/x_len al tama\u00f1o del b\u00fafer URB\n\nnexio_read_data() extrae data_len y x_len de una cabecera __be16 empaquetada en el paquete de interrupci\u00f3n del dispositivo y luego recorre packet -> data[0..x_len) y packet -> data[x_len..data_len) comparando cada byte con un umbral.\n\nAmbos campos son de 16 bits en el cable (m\u00e1x. 65535). Los ajustes existentes recortan como m\u00e1ximo 0x100 / 0x80, por lo que el l\u00edmite del bucle a\u00fan puede alcanzar aproximadamente 0xfeff. El b\u00fafer de transferencia URB para NEXIO es de rept_size (1024) bytes de usb_alloc_coherent(), con los primeros 7 ocupados por la cabecera empaquetada - por lo que packet -> data[] tiene 1017 bytes v\u00e1lidos. Las devoluciones de llamada de read_data() no reciben urb -> actual_length, y nada m\u00e1s limita el recorrido.\n\nUn dispositivo que miente sobre su longitud puede obtener una lectura fuera de l\u00edmites de ~64 KiB m\u00e1s all\u00e1 de la asignaci\u00f3n DMA coherente. El primer \u00edndice cuyo byte excede NEXIO_THRESHOLD aterriza en begin_x / begin_y y de ah\u00ed a las coordenadas t\u00e1ctiles reportadas, por lo que el contenido adyacente de la memoria del kernel se filtra al espacio de usuario como eventos ABS_X / ABS_Y. Lo suficientemente lejos, la lectura tambi\u00e9n puede alcanzar una p\u00e1gina no mapeada y causar un fallo.\n\nSolucione todo esto limitando data_len a la capacidad data[] del b\u00fafer y x_len a data_len."}], "id": "CVE-2026-64014", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-07-19T16:17:41.320", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ca809ea8e0355299266c46e5f1755040aa8dcf3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/103d2de9f505f56da173e43f12dba62f92620278"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2905281cbda52ec9df540113b35b835feb5fafd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/45c829e5eb3b974282bae50b7cca2cc891f74f0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7585b6aa55d8ac85ad22f522e1059f93507727b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/95f47331dfde243f93e679ce70bd0c24b37c683d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d883312061ccde8c536595998aaf687ec070077c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e7cdcb266ba06d8480809b78ab8bb2bf8ff51ccb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: Input: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size", "id": "2502335", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502335"}, "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-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nInput: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size\nnexio_read_data() pulls data_len and x_len from a packed __be16 header\nin the device's interrupt packet and then walks packet->data[0..x_len)\nand packet->data[x_len..data_len) comparing each byte against a\nthreshold.\nBoth fields are 16-bit on the wire (max 65535). The existing\nadjustments shave at most 0x100 / 0x80 off, so the loop bound can still\nreach roughly 0xfeff. The URB transfer buffer for NEXIO is rept_size\n(1024) bytes from usb_alloc_coherent(), with the first 7 occupied by the\npacked header \u2014 so packet->data[] has 1017 valid bytes. read_data()\ncallbacks are not given urb->actual_length, and nothing else bounds the\nwalk.\nA device that lies about its length can get a ~64 KiB out-of-bounds read\npast the coherent DMA allocation. The first index whose byte exceeds\nNEXIO_THRESHOLD lands in begin_x / begin_y and from there into the\nreported touch coordinates, so adjacent kernel memory contents leak to\nuserspace as ABS_X / ABS_Y events. Far enough out, the read can also\nhit an unmapped page and fault.\nFix this all by clamping data_len to the buffer's data[] capacity and\nx_len to data_len.", "A flaw was found in the Linux kernel's `usbtouchscreen` driver. A local attacker with a specially crafted USB touch screen device could exploit this vulnerability by sending a malicious interrupt packet with an oversized length field. This improper handling of input lengths can lead to an out-of-bounds read, allowing the attacker to leak sensitive kernel memory contents to userspace. In some scenarios, this could also result in a system crash."], "name": "CVE-2026-64014", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64014\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64014\nhttps://lore.kernel.org/linux-cve-announce/2026071909-CVE-2026-64014-d94b@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,45c829e5eb3b974282bae50b7cca2cc891f74f0b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,e7cdcb266ba06d8480809b78ab8bb2bf8ff51ccb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,95f47331dfde243f93e679ce70bd0c24b37c683d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,d883312061ccde8c536595998aaf687ec070077c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,103d2de9f505f56da173e43f12dba62f92620278)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,0ca809ea8e0355299266c46e5f1755040aa8dcf3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,7585b6aa55d8ac85ad22f522e1059f93507727b6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5197424cdcccd2b0b1922babb93969b2515c43ce,2905281cbda52ec9df540113b35b835feb5fafd3)"}}], "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": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.93,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-07-21T16:45:02.891761+00:00", "updated": "2026-10-17T10:45:07.858676+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}