185 lines
9.7 KiB
JSON
185 lines
9.7 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-2026-98859",
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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": "2026-09-25T10:25:14.376Z",
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"datePublished": "2026-10-18T15:51:20.456Z",
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"dateUpdated": "2026-10-21T12:57:37.465Z"
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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": "2026-10-21T12:57:37.465Z"
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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: multitouch: stop the release timer from being rearmed on remove\n\nmt_remove() quiesces the sticky-finger timer before stopping the\nhardware:\n\n timer_delete_sync(&td->release_timer);\n\n sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);\n hid_hw_stop(hdev);\n\ntimer_delete_sync() waits for a running callback and dequeues the timer,\nbut it does not stop the timer from being armed again. The transport is\nstill delivering reports at that point, and the report path rearms it:\n\n if (app->quirks & MT_QUIRK_STICKY_FINGERS) {\n if (td->mt_io_flags & MT_IO_SLOTS_MASK)\n mod_timer(&td->release_timer,\n jiffies + msecs_to_jiffies(100));\n\nA report that arrives after timer_delete_sync() has returned therefore\nleaves the timer queued. td is allocated with devm_kzalloc() against\nhdev->dev, so it is freed when the driver is unbound, after mt_remove()\nreturns. When the timer fires afterwards, mt_expired_timeout()\ndereferences the freed td:\n\n struct mt_device *td = timer_container_of(td, t, release_timer);\n struct hid_device *hdev = td->hdev;\n\n if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))\n\nSimply moving the teardown after hid_hw_stop() does not fix this on its\nown, because mt_expired_timeout() calls mt_release_contacts(), which\nwalks hdev->inputs; the timer still has to be quiesced before\nhid_hw_stop() tears the input devices down.\n\nUse timer_shutdown_sync() instead, which additionally makes any later\nmod_timer() a no-op, so neither ordering constraint has to be traded off\nagainst the other. This is the final-teardown pattern the function was\nintroduced for, and hid-wiimote already uses it for the same reason."
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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-multitouch.c"
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],
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"versions": [
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{
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"version": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
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"lessThan": "3776f34fbce990af45978f1628d2e1adc0d67d0f",
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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": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
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"lessThan": "1f1bd9a3117f082eb891c0986c4f0e04cd974c9a",
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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": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
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"lessThan": "0c19a6c1d25fd5ed66d1f80dc6f6e56cc1f0a787",
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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": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
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"lessThan": "a0125ca86e405b8a704e96157a6c10ca51087652",
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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": "4f4001bc76fd1a138a501fbd3d68cce72cbf96ce",
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"lessThan": "5acb2dace582f061aab5e14c399ac9480315f44b",
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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-multitouch.c"
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],
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"versions": [
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{
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"version": "4.13",
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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": "4.13",
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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": "6.12.113",
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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": "6.18.56",
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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": "7.2.10",
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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": "4.13",
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"versionEndExcluding": "6.6.160"
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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": "4.13",
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"versionEndExcluding": "6.12.113"
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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": "4.13",
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"versionEndExcluding": "6.18.56"
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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": "4.13",
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"versionEndExcluding": "7.2.10"
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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": "4.13",
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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/3776f34fbce990af45978f1628d2e1adc0d67d0f"
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},
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{
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"url": "https://git.kernel.org/stable/c/1f1bd9a3117f082eb891c0986c4f0e04cd974c9a"
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},
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{
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"url": "https://git.kernel.org/stable/c/0c19a6c1d25fd5ed66d1f80dc6f6e56cc1f0a787"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0125ca86e405b8a704e96157a6c10ca51087652"
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},
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{
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"url": "https://git.kernel.org/stable/c/5acb2dace582f061aab5e14c399ac9480315f44b"
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}
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],
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"title": "HID: multitouch: stop the release timer from being rearmed on remove",
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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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} |