{"schema":"threatline.record/2","record":{"id":"CVE-2026-98903","aliases":[],"summary":"mailbox: imx: Add a channel shutdown field","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: imx: Add a channel shutdown field\n\nsashiko complained about possible teardown problem. The scenario\n\n CPU 0                              CPU 1\n  imx_mu_isr()                   imx_mu_shutdown()\n                                   imx_mu_xcr_rmw(priv, IMX_MU_RCR, 0, IMX_MU_xCR_RIEn(priv->dcfg->type, cp->idx));\n    imx_mu_specific_rx()\n      imx_mu_xcr_rmw(priv, IMX_MU_RCR, IMX_MU_xCR_RIEn(priv->dcfg->type, 0), 0);\n                                   free_irq()\n\nThe RX event remains enabled because in this short window the RX event\nwas disabled in ->shutdown() while the interrupt was active and then\nenabled again by the ISR while ->shutdown waited in free_irq().\n\nThis race requires timing and if happens can be problematic on shared\nhandlers if the \"removed\" channel triggers an interrupt. In this case\nthe irq-core will shutdown the interrupt with the \"nobody cared\"\nmessage.\n\nIntroduce imx_mu_con_priv::shutdown to signal that the channel is\nshutting down. This flag is set with the lock held (by\nimx_mu_xcr_clr_shut()). The unmask side uses imx_mu_xcr_set_act() which\nonly enables the event if the channel has not been shutdown and\nserialises on the same lock.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"02273054b2e94e53065ea5644265bb9d8f7ee2a7","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"944d8509c2220a2313d4a094a646507929fb6f8d","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"5ccea7eacb7786c358833634f45700365f6c1d99","status":"affected","versionType":"git"},{"version":"0","lessThan":"6.12.111","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.18.53","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"02273054b2e94e53065ea5644265bb9d8f7ee2a7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"944d8509c2220a2313d4a094a646507929fb6f8d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"5ccea7eacb7786c358833634f45700365f6c1d99","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.111","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","source_modified_at":"2026-10-23T11:54:15.010Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.18.53","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":"2026-10-23T11:54:15.010Z","modified_at":"2026-10-23T11:54:15.010Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98903","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T11:54:15.010Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/02273054b2e94e53065ea5644265bb9d8f7ee2a7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/944d8509c2220a2313d4a094a646507929fb6f8d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5ccea7eacb7786c358833634f45700365f6c1d99"}],"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":"2026-10-23T11:54:15.010Z","content_hash":"0bd1f1dd2de4fa2788a0eb79315f7292061eb88080f02cde97d9705d083c855f"}}