222 lines
12 KiB
JSON
222 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-2026-80937",
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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": "2026-08-26T14:34:25.803Z",
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"datePublished": "2026-09-11T19:42:10.822Z",
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"dateUpdated": "2026-10-30T12:31:27.755Z"
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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": "2026-10-30T12:31:27.755Z"
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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\nwifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy\n\nmt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver's\ndev->mt76.eeprom.data buffer at the offset reported by the MCU response\n(res->addr, a device-controlled __le32) without checking it against the\nbuffer size. A malicious or malfunctioning device can report an arbitrary\naddress and drive a 16-byte out-of-bounds write past eeprom.data.\n\nReject a response whose address would place the copy outside eeprom.data\nbefore deriving the destination pointer. Devices that echo the requested\nin-bounds offset are unaffected."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The OOB write is driven by a MediaTek Wi-Fi 6 MCU EFUSE query response (mt7915/mt7916/mt7981/mt7986), not a routed IP service; the highest reasonable exposure is an adjacent attacker who can drive malicious firmware or device behavior on the local radio.\nAC:L - A malicious MCU response can set an arbitrary res->addr and 16 device-controlled payload bytes; the host then memcpy's MT7915_EEPROM_BLOCK_SIZE bytes to eeprom.data+addr with no race or other condition beyond attacker control.\nPR:N - MCU EEPROM responses are consumed in mt7915_eeprom_load() during driver bring-up with no OS credential, capability, or Wi-Fi authentication check; an adjacent attacker needs no local account.\nUI:N - The copy runs automatically in mt7915_eeprom_load() during pci_probe/platform probe after firmware load; no victim action such as mounting a filesystem or opening a file is required.\nS:U - The write corrupts host kernel heap around the mt76 EEPROM buffer and is standard kernel memory corruption, not a VM escape, IOMMU bypass, or other crossed security authority.\nC:H - Attacker-controlled destination offset and payload are kernel memory corruption that can overwrite adjacent objects and pointers and be leveraged for information disclosure, so confidentiality impact is high.\nI:H - Sixteen bytes of device-controlled data are written at a device-chosen offset past the 3584/4096-byte eeprom.data allocation, an out-of-bounds write primitive that can yield arbitrary kernel writes or control-flow hijacking.\nA:H - An unbounded kernel heap write during EEPROM init can oops, panic, or hang the host, a high availability impact on Wi-Fi 6 APs, routers, and workstations."
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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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"drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"
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],
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"versions": [
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{
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"version": "e57b7901469fc0b021930b83a8094baaf3d81b09",
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"lessThan": "ef10a2ec2a74c4a6aa5c086fc0c2b01037569134",
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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": "e57b7901469fc0b021930b83a8094baaf3d81b09",
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"lessThan": "d6774f6af3711143a93281904a928a78652c8b7e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"lessThan": "394e8cb56fc732d71041599cdb4e01f82cfd11c5",
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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": "e57b7901469fc0b021930b83a8094baaf3d81b09",
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"lessThan": "5fdaf7016d7684ef756a229fd5d96b4a140eeb40",
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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": "e57b7901469fc0b021930b83a8094baaf3d81b09",
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"lessThan": "5f48b0d752a76590e2c613aae5345c2474627d1b",
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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": "e57b7901469fc0b021930b83a8094baaf3d81b09",
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"lessThan": "44b5adfe49499f53002737f5fe81d608c08122fc",
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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/net/wireless/mediatek/mt76/mt7915/mcu.c"
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],
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"versions": [
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{
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"version": "5.8",
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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": "5.8",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.112",
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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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"nodes": [
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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": "5.8",
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"versionEndExcluding": "6.1.191"
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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/ef10a2ec2a74c4a6aa5c086fc0c2b01037569134"
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},
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{
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"url": "https://git.kernel.org/stable/c/d6774f6af3711143a93281904a928a78652c8b7e"
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},
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{
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"url": "https://git.kernel.org/stable/c/394e8cb56fc732d71041599cdb4e01f82cfd11c5"
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},
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{
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"url": "https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"
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},
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{
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"url": "https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b"
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},
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{
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"url": "https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc"
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}
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],
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"title": "wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |