{"schema":"threatline.record/2","record":{"id":"CVE-2026-99189","aliases":[],"summary":"gpio: mxc: fix race between chained IRQ handler install and probe completion","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: mxc: fix race between chained IRQ handler install and probe completion\n\nmxc_update_irq_chained_handler() is called before the IRQ domain, the\ngeneric IRQ chip, and the port list entry are set up. If an interrupt\narrives in that window:\n\n - mx3_gpio_irq_handler() calls generic_handle_domain_irq() with\n   port->domain still NULL.\n - mx2_gpio_irq_handler() walks mxc_gpio_ports, but the port has not\n   been added to the list yet.\n\nAdditionally, if any of the subsequent probe steps\n(gpio_generic_chip_init(), devm_gpiochip_add_data(),\nirq_domain_create_legacy(), or mxc_gpio_init_gc()) fail, the error\npaths never unregister the chained handler, leaving a dangling handler\nthat points at freed memory.\n\nMove the handler installation after all its dependencies are ready and\nafter list_add_tail(), so the handler is never live while the data\nstructures it touches are incomplete, and is never installed if probe\nfails.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99189","source_modified_at":"2026-10-28T10:35:46.366Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b","lessThan":"261802c14e1a3281987ea8f106701e5ed9652f68","status":"affected","versionType":"git"},{"version":"5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b","lessThan":"6c1e035d881579a6e4ed1ce5feabb13d23e80a82","status":"affected","versionType":"git"},{"version":"5f6d1998adeb5374ef248b5ba2e2a0c30ab0f60b","lessThan":"38d44f78f041ffe60c8e2443b99434a199e7541d","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99189","source_modified_at":"2026-10-28T10:35:46.366Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.18.59","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.13","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-2026-99189","source_modified_at":"2026-10-28T10:35:46.366Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"261802c14e1a3281987ea8f106701e5ed9652f68","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99189","source_modified_at":"2026-10-28T10:35:46.366Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"6c1e035d881579a6e4ed1ce5feabb13d23e80a82","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99189","source_modified_at":"2026-10-28T10:35:46.366Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"38d44f78f041ffe60c8e2443b99434a199e7541d","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T10:35:46.366Z","modified_at":"2026-10-28T10:35:46.366Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99189","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28T10:35:46.366Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/261802c14e1a3281987ea8f106701e5ed9652f68"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6c1e035d881579a6e4ed1ce5feabb13d23e80a82"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/38d44f78f041ffe60c8e2443b99434a199e7541d"}],"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":"2026-10-28T10:35:46.366Z","content_hash":"7b4ae34fc043f9e6be38945930586a2f852430814f03e8966c2bf09a004434c9"}}