249 lines
12 KiB
JSON
249 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-2025-39686",
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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": "2025-04-16T07:20:57.113Z",
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"datePublished": "2025-09-05T17:20:53.071Z",
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"dateUpdated": "2026-05-12T12:06:13.615Z"
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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": "2026-05-11T21:34:17.797Z"
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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\ncomedi: Make insn_rw_emulate_bits() do insn->n samples\n\nThe `insn_rw_emulate_bits()` function is used as a default handler for\n`INSN_READ` instructions for subdevices that have a handler for\n`INSN_BITS` but not for `INSN_READ`. Similarly, it is used as a default\nhandler for `INSN_WRITE` instructions for subdevices that have a handler\nfor `INSN_BITS` but not for `INSN_WRITE`. It works by emulating the\n`INSN_READ` or `INSN_WRITE` instruction handling with a constructed\n`INSN_BITS` instruction. However, `INSN_READ` and `INSN_WRITE`\ninstructions are supposed to be able read or write multiple samples,\nindicated by the `insn->n` value, but `insn_rw_emulate_bits()` currently\nonly handles a single sample. For `INSN_READ`, the comedi core will\ncopy `insn->n` samples back to user-space. (That triggered KASAN\nkernel-infoleak errors when `insn->n` was greater than 1, but that is\nbeing fixed more generally elsewhere in the comedi core.)\n\nMake `insn_rw_emulate_bits()` either handle `insn->n` samples, or return\nan error, to conform to the general expectation for `INSN_READ` and\n`INSN_WRITE` handlers."
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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/comedi/drivers.c"
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],
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"versions": [
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{
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"version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "ab77e85bd3bc006ef40738f26f446a660813da44",
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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": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "ae8bc1f07bcb31b8636420e03d1f9c3df6219a2b",
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"status": "affected",
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},
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{
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"version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "842f307a1d115b24f2bcb2415c4e344f11f55930",
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"status": "affected",
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},
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{
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"version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "92352ed2f9ac422181e381c2430c2d0dfb46faa0",
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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": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "dc0a2f142d655700db43de90cb6abf141b73d908",
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"status": "affected",
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},
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{
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"version": "ed9eccbe8970f6eedc1b978c157caf1251a896d4",
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"lessThan": "7afba9221f70d4cbce0f417c558879cba0eb5e66",
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"status": "affected",
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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/comedi/drivers.c"
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],
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"versions": [
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{
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"version": "2.6.29",
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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": "2.6.29",
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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": "5.15.190",
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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": "6.1.149",
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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": "6.6.103",
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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": "6.12.44",
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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": "6.16.4",
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"lessThanOrEqual": "6.16.*",
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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": "6.17",
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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": "2.6.29",
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"versionEndExcluding": "5.15.190"
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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": "2.6.29",
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"versionEndExcluding": "6.1.149"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ab77e85bd3bc006ef40738f26f446a660813da44"
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},
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{
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"url": "https://git.kernel.org/stable/c/ae8bc1f07bcb31b8636420e03d1f9c3df6219a2b"
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},
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{
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"url": "https://git.kernel.org/stable/c/842f307a1d115b24f2bcb2415c4e344f11f55930"
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},
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{
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"url": "https://git.kernel.org/stable/c/92352ed2f9ac422181e381c2430c2d0dfb46faa0"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc0a2f142d655700db43de90cb6abf141b73d908"
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},
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{
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"url": "https://git.kernel.org/stable/c/7afba9221f70d4cbce0f417c558879cba0eb5e66"
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}
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],
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"title": "comedi: Make insn_rw_emulate_bits() do insn->n samples",
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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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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T17:42:18.407Z"
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}
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},
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{
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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-05-12T12:06:13.615Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC CN 4100",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "V5.0",
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"versionType": "custom"
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"references": [
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
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}
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]
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]
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}
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} |