{"schema":"threatline.record/2","record":{"id":"CVE-2026-98767","aliases":[],"summary":"usb: dwc3: gadget: fix IRQ storm on invalid event buffer count","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: gadget: fix IRQ storm on invalid event buffer count\n\nWhen dwc3_check_event_buf() reads a GEVNTCOUNT value exceeding the\nevent buffer length, commit 63ccd26cd1f6 (\"usb: dwc3: gadget: check\nthat event count does not exceed event buffer length\") returns IRQ_NONE\nwithout writing back GEVNTCOUNT. Since the DWC3 interrupt is\nlevel-triggered, the uncleared IRQ source keeps the line asserted,\ncausing a tight IRQ storm that accumulates 99,900 unhandled interrupts\nand triggers spurious.c:184 BUG -> kernel panic.\n\nThe resulting call stack:\n  __report_bad_irq+0xac/0xc8\n  note_interrupt+0x340/0x468\n  handle_irq_event+0xac/0xc0\n  handle_fasteoi_irq+0x120/0x228\n  gic_handle_irq+0x68/0x108\n  ...\n  kernel BUG at kernel/irq/spurious.c:184\n\nTo reproduce, write a bogus value exceeding the event buffer length\ndirectly to the GEVNTCOUNT register:\n\n  devmem <DWC3_BASE + 0xc40c> 4 0x1004\n\nWrite the bogus count back to GEVNTCOUNT to clear the IRQ source,\nconsistent with the stale event clearing pattern in\ndwc3_event_buffers_setup(), and schedule error recovery to\nreinitialize the controller.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"c4d80e41cb42008dceb35e5dbf52574d93beac0d","lessThan":"6cd82563bb270e03fe2f91324660ea14e3ce5d1a","status":"affected","versionType":"git"},{"version":"52a7c9d930b95aa8b1620edaba4818040c32631f","lessThan":"96918ca25ff467c25675478fc79393df4ae9d74c","status":"affected","versionType":"git"},{"version":"63ccd26cd1f6600421795f6ca3e625076be06c9f","lessThan":"ba927133b301894e7d24099afbb701887c8cd2f1","status":"affected","versionType":"git"},{"version":"63ccd26cd1f6600421795f6ca3e625076be06c9f","lessThan":"f51cadb02b439850ab411df0a2cf4288a66d42e2","status":"affected","versionType":"git"},{"version":"63ccd26cd1f6600421795f6ca3e625076be06c9f","lessThan":"1ff77cbefe5a653ea12874c213ea4bd0d72c1067","status":"affected","versionType":"git"},{"version":"015c39f38e69a491d2abd5e98869a500a9459b3b","status":"affected","versionType":"git"},{"version":"b43225948b231b3f331194010f84512bee4d9f59","status":"affected","versionType":"git"},{"version":"c0079630f268843a25ed75226169cba40e0d8880","status":"affected","versionType":"git"},{"version":"a44547015287a19001384fe94dbff84c92ce4ee1","status":"affected","versionType":"git"},{"version":"99d655119b870ee60e4dbf310aa9a1ed8d9ede3d","status":"affected","versionType":"git"},{"version":"6.6.89","lessThan":"6.6.160","status":"affected","versionType":"semver"},{"version":"6.12.26","lessThan":"6.12.113","status":"affected","versionType":"semver"},{"version":"5.4.293","lessThan":"5.5","status":"affected","versionType":"semver"},{"version":"5.10.237","lessThan":"5.11","status":"affected","versionType":"semver"},{"version":"5.15.181","lessThan":"5.16","status":"affected","versionType":"semver"},{"version":"6.1.136","lessThan":"6.2","status":"affected","versionType":"semver"},{"version":"6.14.5","lessThan":"6.15","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6cd82563bb270e03fe2f91324660ea14e3ce5d1a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"96918ca25ff467c25675478fc79393df4ae9d74c","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1ff77cbefe5a653ea12874c213ea4bd0d72c1067","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","source_modified_at":"2026-10-21T12:56:41.933Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6.15","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.0574,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:48:02.089Z","modified_at":"2026-10-21T12:56:41.933Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98767","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:56:41.933Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98767","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/6cd82563bb270e03fe2f91324660ea14e3ce5d1a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/96918ca25ff467c25675478fc79393df4ae9d74c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ba927133b301894e7d24099afbb701887c8cd2f1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f51cadb02b439850ab411df0a2cf4288a66d42e2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1ff77cbefe5a653ea12874c213ea4bd0d72c1067"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:56:41.933Z","content_hash":"da3f30962a2b205569d5f726d092db98d92e3cdefcafeb988421e74a7b5c2e08"}}