{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64014", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.027Z", "datePublished": "2026-07-19T14:56:27.995Z", "dateUpdated": "2026-07-19T14:56:27.995Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:56:27.995Z" }, "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 — 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" } } } }