164 lines
7.8 KiB
JSON
164 lines
7.8 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-2026-93119",
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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": "2026-09-17T16:02:15.086Z",
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"datePublished": "2026-09-17T16:11:25.867Z",
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"dateUpdated": "2026-10-19T09:05:52.849Z"
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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": "2026-10-19T09:05:52.849Z"
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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\nusb: ljca: bound bank_num in ljca_enumerate_gpio()\n\nljca_enumerate_gpio() reads desc->bank_num from the device and loops\nvalid_pin[i] = get_unaligned_le32(...) for i < bank_num. valid_pin[]\nholds only LJCA_MAX_GPIO_NUM / 32 = 2 entries.\n\nTwo checks run before the loop. The reply length must match\nstruct_size(desc, bank_desc, bank_num). The product\npins_per_bank * bank_num must not exceed LJCA_MAX_GPIO_NUM. Neither one\nbounds bank_num against the size of valid_pin[]. The reply is capped at\nLJCA_MAX_PAYLOAD_SIZE (60) bytes, so the struct_size check limits\nbank_num to 9. A device that reports bank_num 9 with pins_per_bank 7\nstill passes both checks. gpio_num is 63 and the reply is 56 bytes. The\nloop then writes nine u32 into the two entry array and overruns\nvalid_pin[] on the stack.\n\nA broken or malicious LJCA device can therefore overflow the stack.\nReject a bank_num that does not fit valid_pin[]."
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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/usb/misc/usb-ljca.c"
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],
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"versions": [
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{
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"version": "acd6199f195d6de814ac4090ce0864a613b1580e",
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"lessThan": "0069593170a3d177de793c9a0b36989c4f069111",
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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": "acd6199f195d6de814ac4090ce0864a613b1580e",
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"lessThan": "aed958c4f784a29cf42abb3e54af51a16bddde46",
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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": "acd6199f195d6de814ac4090ce0864a613b1580e",
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"lessThan": "9c4bc8f7426aa001387800bf0140bfc5087a6de3",
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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": "acd6199f195d6de814ac4090ce0864a613b1580e",
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"lessThan": "dd9483726d0f16c1a56879c3edb65128259a4e2b",
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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/usb/misc/usb-ljca.c"
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],
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"versions": [
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{
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"version": "6.7",
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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": "6.7",
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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": "6.12.110",
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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": "6.18.52",
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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": "7.2.6",
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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": "6.7",
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"versionEndExcluding": "6.12.110"
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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": "6.7",
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"versionEndExcluding": "6.18.52"
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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": "6.7",
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"versionEndExcluding": "7.2.6"
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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": "6.7",
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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/0069593170a3d177de793c9a0b36989c4f069111"
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},
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{
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"url": "https://git.kernel.org/stable/c/aed958c4f784a29cf42abb3e54af51a16bddde46"
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},
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{
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"url": "https://git.kernel.org/stable/c/9c4bc8f7426aa001387800bf0140bfc5087a6de3"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd9483726d0f16c1a56879c3edb65128259a4e2b"
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}
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],
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"title": "usb: ljca: bound bank_num in ljca_enumerate_gpio()",
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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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} |