248 lines
13 KiB
JSON
248 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-2026-80766",
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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": "2026-08-26T14:34:25.791Z",
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"datePublished": "2026-09-04T15:12:38.520Z",
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"dateUpdated": "2026-10-19T08:43:22.787Z"
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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": "2026-10-19T08:43:22.787Z"
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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: uclogic: fix use-after-free of inrange_timer on remove\n\nuclogic_remove() cancels the pen in-range timer and then stops the\ndevice:\n\n\ttimer_delete_sync(&drvdata->inrange_timer);\n\thid_hw_stop(hdev);\n\ntimer_delete_sync() only guarantees the timer is idle at that instant.\nuclogic_raw_event_pen() keeps delivering pen reports until hid_hw_stop()\nstops the transport several lines later, and every report with\npen->inrange == UCLOGIC_PARAMS_PEN_INRANGE_NONE re-arms the timer:\n\n\tmod_timer(&drvdata->inrange_timer, jiffies + msecs_to_jiffies(100));\n\nA report landing between the timer_delete_sync() call and the transport\nteardown in hid_hw_stop() re-arms inrange_timer after it was cancelled.\nuclogic_remove() then returns and the devm drvdata is freed, while\nhid_hw_stop() has already freed the input device drvdata->pen_input\npoints at, so when the timer fires ~100 ms later\nuclogic_inrange_timeout() dereferences freed memory -- a use-after-free\nin timer-softirq context.\n\nSwapping the two calls is not a fix: stopping the device first frees\ndrvdata->pen_input via hidinput_disconnect() while the timer may still\nbe pending, so a timer already armed before removal fires on the freed\ninput device in the window before timer_delete_sync() runs.\n\nUse timer_shutdown_sync() before hid_hw_stop() instead. It cancels the\ntimer, waits for a running callback while pen_input is still valid, and\nprevents any further re-arming -- a later mod_timer() from an in-flight\nreport is silently ignored -- so the timer is provably dead before\nhid_hw_stop() frees the inputs. This is the ordering the timer core\ndocuments for this \"timer re-armed from another path\" teardown case."
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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-uclogic-core.c"
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],
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"versions": [
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{
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"version": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "f40243358b407aec362fe305fabfcdc94a3abd89",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "dc5108f18f58870a8dd4203a02a47e571a2be7f0",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "9d77ac82e57ead056cf3f71d347083ed9244ad90",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "e750cdb6de009aace3c77f37fe2173f96175e8e4",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "849e537160bbb77fe419ecc3944bfe125dcd441b",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "f1b3ca06380531f49f988f4721d3ed30b0d7a5d2",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "f13d0a00204b05e62336da0ab72ea0d87b56690c",
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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": "01309e29eb95c16bd48984f2589fad0cbf5e27d1",
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"lessThan": "506fd50a9027340f0e9dcc587d10ccb03312dba6",
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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-uclogic-core.c"
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],
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"versions": [
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{
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"version": "5.1",
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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": "5.1",
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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": "5.15.220",
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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": "6.1.187",
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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": "6.6.156",
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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": "6.12.108",
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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": "6.18.47",
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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": "7.1.11",
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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": "7.2.1",
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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": "5.1",
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"versionEndExcluding": "5.15.220"
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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": "5.1",
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"versionEndExcluding": "6.1.187"
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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": "5.1",
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"versionEndExcluding": "6.6.156"
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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": "5.1",
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"versionEndExcluding": "6.12.108"
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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": "5.1",
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"versionEndExcluding": "6.18.47"
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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": "5.1",
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"versionEndExcluding": "7.1.11"
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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": "5.1",
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"versionEndExcluding": "7.2.1"
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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": "5.1",
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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/f40243358b407aec362fe305fabfcdc94a3abd89"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc5108f18f58870a8dd4203a02a47e571a2be7f0"
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},
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{
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"url": "https://git.kernel.org/stable/c/9d77ac82e57ead056cf3f71d347083ed9244ad90"
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},
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{
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"url": "https://git.kernel.org/stable/c/e750cdb6de009aace3c77f37fe2173f96175e8e4"
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},
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{
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"url": "https://git.kernel.org/stable/c/849e537160bbb77fe419ecc3944bfe125dcd441b"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1b3ca06380531f49f988f4721d3ed30b0d7a5d2"
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},
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{
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"url": "https://git.kernel.org/stable/c/f13d0a00204b05e62336da0ab72ea0d87b56690c"
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},
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{
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"url": "https://git.kernel.org/stable/c/506fd50a9027340f0e9dcc587d10ccb03312dba6"
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}
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],
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"title": "HID: uclogic: fix use-after-free of inrange_timer 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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} |