247 lines
13 KiB
JSON
247 lines
13 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-2026-68348",
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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": "2026-07-30T09:28:09.384Z",
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"datePublished": "2026-08-10T12:03:25.193Z",
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"dateUpdated": "2026-10-19T21:09:05.718Z"
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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": "2026-08-17T05:03:50.265Z"
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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\nASoC: tas2781: bound firmware description string parsing\n\nThe TAS2781 firmware parser reads several variable-length description\nstrings with strlen() before checking that the string terminator is\npresent inside the firmware blob. A malformed firmware image without a\nNUL terminator can therefore make the parser walk past the end of the\nfirmware buffer before the later size checks run.\n\nAdd a small bounded string-length helper and use it for all description\nfields that are parsed from the firmware buffer. Keep the existing size\nchecks for the fixed bytes that follow each string."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The malformed blob is consumed by request_firmware() from the local firmware search path during tas2781 codec probe (tasdevice_dsp_parser/tas2781_load_calibration); there is no network, adjacent-network, or peer-supplied data path into the parser, so local presence on the affected system is required.\nAC:L - Simply omitting the NUL terminator at the end of a coef/cal .bin file makes strlen() run past fmw->size deterministically on every load — no race, no timing window, and no memory-layout precondition the attacker cannot influence.\nPR:L - The parsing path contains no capability, credential, or privilege check whatsoever, and the firmware search path on many embedded/Android/appliance deployments lives on a vendor or data partition writable by non-root system accounts; a low-privileged local account is therefore sufficient to be positioned to place the blob.\nUI:N - Parsing runs from the asynchronous request_firmware_nowait() completion callback during device probe/bind; once the file is in place it is consumed automatically at the next boot or driver bind with no victim action required.\nS:U - The out-of-bounds read occurs in kernel memory belonging to the same kernel that hosts the vulnerable codec driver, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - strlen() is unbounded — it walks from the description offset through arbitrary kernel memory adjacent to the firmware buffer until a zero byte is found, so the read is not confined to a few bytes and touches heap/vmalloc contents outside the intended allocation.\nI:N - The defect is purely a read: the computed length is re-validated against fmw->size afterwards (and int/size_t promotion makes overflowed sums fail the check), so no out-of-bounds write or corrupted parse offset results from the OOB strlen.\nA:H - Firmware buffers are vmalloc/kmalloc allocations, so a strlen() walk past the end readily crosses into an unmapped page or guard page and produces a kernel oops/panic, which is High availability impact."
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}
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]
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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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"sound/soc/codecs/tas2781-fmwlib.c"
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],
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"versions": [
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{
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"version": "915f5eadebd29ba185ac506766a90120153b7e14",
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"lessThan": "3ddb0d3e36507615e5ef010a879357a54870adf5",
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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": "915f5eadebd29ba185ac506766a90120153b7e14",
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"lessThan": "0ec45e80a82785ee147516fdecf5c93707dec119",
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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": "915f5eadebd29ba185ac506766a90120153b7e14",
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"lessThan": "41ae2b7d37c3dd82302167496836cca9f0328374",
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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": "915f5eadebd29ba185ac506766a90120153b7e14",
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"lessThan": "e75ef37d83c90b09bedb601624b47e168202b226",
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"status": "affected",
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},
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"version": "915f5eadebd29ba185ac506766a90120153b7e14",
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"lessThan": "bc889dfcea9294a1eae7f8e2f3573a90764ae4d0",
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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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"sound/soc/codecs/tas2781-fmwlib.c"
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],
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"versions": [
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{
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"version": "6.5",
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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": "6.5",
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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": "6.6.148",
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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": "6.12.101",
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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": "6.18.42",
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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": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.5",
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"versionEndExcluding": "6.6.148"
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},
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{
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"vulnerable": true,
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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/3ddb0d3e36507615e5ef010a879357a54870adf5"
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},
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{
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"url": "https://git.kernel.org/stable/c/0ec45e80a82785ee147516fdecf5c93707dec119"
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},
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{
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"url": "https://git.kernel.org/stable/c/41ae2b7d37c3dd82302167496836cca9f0328374"
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},
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{
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"url": "https://git.kernel.org/stable/c/e75ef37d83c90b09bedb601624b47e168202b226"
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},
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{
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"url": "https://git.kernel.org/stable/c/bc889dfcea9294a1eae7f8e2f3573a90764ae4d0"
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}
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],
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"title": "ASoC: tas2781: bound firmware description string parsing",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-68348",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:47:21.509614Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T21:09:05.718Z"
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}
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}
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]
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}
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} |