248 lines
12 KiB
JSON
248 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-89628",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-11T19:38:34.738Z",
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"datePublished": "2026-09-11T19:45:24.203Z",
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"dateUpdated": "2026-10-19T08:50:00.490Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:50:00.490Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: picolcd: clamp eeprom debugfs read to bytes actually received\n\npicolcd_debug_eeprom_read() trusts resp->raw_data[2] -- a length byte\nsupplied by the device in its REPORT_EE_DATA reply -- clamped only to\nthe caller's read() count:\n\n\tret = resp->raw_data[2];\n\tif (ret > s)\n\t\tret = s;\n\tif (copy_to_user(u, resp->raw_data+3, ret))\n\nIt never checks resp->raw_size, the number of bytes picolcd_raw_event()\nactually copied into the 64-byte raw_data[] of the kmalloc'd struct\npicolcd_pending. A device (or a spoofed picoLCD) returning a length byte\nof 0xff, read with a count >= 255, makes copy_to_user() read past\nraw_data[] into adjacent slab memory and return it to userspace through\nthe debugfs \"eeprom\" file:\n\n\tBUG: KASAN: slab-out-of-bounds in _copy_to_user\n\tRead of size 255 ... picolcd_debug_eeprom_read+0x214/0x2f0 [hid_picolcd]\n\nThe debug-dump path in the same file already validates the device length\nbyte against the received size before trusting it; this read does not.\nThe file is created S_IRUSR (root-only) and a crafted device is needed,\nso it is neither unprivileged- nor remotely-triggerable.\n\nClamp the copy length to resp->raw_size - 3 (the payload actually\nreceived, minus the 3-byte header), floored at 0 for short replies."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/hid/hid-picolcd_debugfs.c"
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],
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"versions": [
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "1a02056c2bf7ef9b5fd05ee6913aeeadb703c443",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "65daa322f1021d8206f8032c4cd4c0cb2d26c7c3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "8dc662af019158690c470edd2e2857657f700abb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "4daf432c94a42e7be6aa10b012b33af5ed9bc118",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "a3e6e8d7198a9f3861861520a38b673684a1062b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "471f4a939c66d1d44aece2321807abf609fc9098",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "699a3c8b56e168ca19d12722f3f5ef1d6f4b1d84",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "9bbf2b98ba11d00bd73e3254e15cfe17ccaff6ba",
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"lessThan": "e9c667395ac1f8024f623250b32bae4c7af9caa0",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/hid/hid-picolcd_debugfs.c"
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],
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"versions": [
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{
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"version": "2.6.35",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.35",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.270",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.221",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.188",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.157",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.109",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.50",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.4",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "5.10.270"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "5.15.221"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "6.1.188"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "6.6.157"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "6.12.109"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "6.18.50"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "7.2.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.35",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/1a02056c2bf7ef9b5fd05ee6913aeeadb703c443"
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},
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{
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"url": "https://git.kernel.org/stable/c/65daa322f1021d8206f8032c4cd4c0cb2d26c7c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/8dc662af019158690c470edd2e2857657f700abb"
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},
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{
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"url": "https://git.kernel.org/stable/c/4daf432c94a42e7be6aa10b012b33af5ed9bc118"
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},
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{
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"url": "https://git.kernel.org/stable/c/a3e6e8d7198a9f3861861520a38b673684a1062b"
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},
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{
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"url": "https://git.kernel.org/stable/c/471f4a939c66d1d44aece2321807abf609fc9098"
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},
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{
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"url": "https://git.kernel.org/stable/c/699a3c8b56e168ca19d12722f3f5ef1d6f4b1d84"
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},
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{
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"url": "https://git.kernel.org/stable/c/e9c667395ac1f8024f623250b32bae4c7af9caa0"
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}
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],
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"title": "HID: picolcd: clamp eeprom debugfs read to bytes actually received",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |