{"id":"CVE-2026-89938","revision":"bd88639f21364870a70300760967ea24","records":[{"revision":"bd88639f21364870a70300760967ea24","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89938","aliases":[],"title":"iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF\n\nThe atlas driver requests its hardware data-ready IRQ with\ndevm_request_threaded_irq(); its threaded handler queues an irq_work,\natlas_work_handler(), that calls iio_trigger_poll(data->trig).\n\nThe IRQ is devm-managed, so free_irq() runs from the devres unwind after\natlas_remove() returns without flushing that irq_work.  Once a buffer is\nenabled, conversion-complete IRQs keep firing and queueing it; a pending\nirq_work can therefore run after the unwind has freed atlas_data/indio_dev\nand the trigger, when atlas_work_handler() derives the atlas_data pointer\nvia container_of() and dereferences data->trig, a use-after-free.\n\nCall iio_trigger_poll_nested() directly from the threaded handler instead\nof bouncing through irq_work.  free_irq() then drains the threaded handler,\nclosing the window; other iio drivers with a threaded data-ready IRQ do the\nsame (e.g. bmi270).\n\nThis issue was found by an in-house static analysis tool.","state":0,"publishedAt":"2026-09-16T10:32:27.012+00:00","modifiedAt":"2026-10-19T08:55:12.734+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iio/chemical/atlas-sensor.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7103b99b031cb0ff6979331757bfc4893f37ae9e\",\n                            \"lessThan\": \"f64b437641b5a70c18bb0fd38da2b69d8926c871\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7103b99b031cb0ff6979331757bfc4893f37ae9e\",\n                            \"lessThan\": \"91e12b0fbd7047d02bf4ef4dbc491b9ef0159250\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7103b99b031cb0ff6979331757bfc4893f37ae9e\",\n                            \"lessThan\": \"2071624c3d0f497ca91da78858e6f30d7112fea6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7103b99b031cb0ff6979331757bfc4893f37ae9e\",\n                            \"lessThan\": \"30b0d44c978bbc857bd68b71dab371805653de70\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7103b99b031cb0ff6979331757bfc4893f37ae9e\",\n                            \"lessThan\": \"be61c8c6252671ecf1fee0ad90f87669e0be1e20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iio/chemical/atlas-sensor.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f64b437641b5a70c18bb0fd38da2b69d8926c871","https://git.kernel.org/stable/c/91e12b0fbd7047d02bf4ef4dbc491b9ef0159250","https://git.kernel.org/stable/c/2071624c3d0f497ca91da78858e6f30d7112fea6","https://git.kernel.org/stable/c/30b0d44c978bbc857bd68b71dab371805653de70","https://git.kernel.org/stable/c/be61c8c6252671ecf1fee0ad90f87669e0be1e20"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89938","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89938","identifiers":["CVE-2026-89938"]},"retained":false,"historicalAffected":[]}],"coverage":[]}