{"id":"CVE-2026-89936","revision":null,"records":[{"revision":"e713c9d1a13147549316e443400abf85","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89936","aliases":[],"title":"iio: dac: m62332: Fix regulator reference count imbalance","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: dac: m62332: Fix regulator reference count imbalance\n\nm62332_set_value() enables the Vcc regulator on every write of a\nnon-zero value and disables it on every write of zero, without tracking\nthe channel's current state. Because the regulator is reference counted,\nchanging a channel directly from one non-zero value to another enables\nit more than once, while a later write of zero disables it only once.\nThe reference count never returns to zero and the regulator is left\nenabled indefinitely.\n\nOnly enable the regulator on the transition from zero to non-zero, and\nonly disable it on the transition from non-zero to zero, using the\npreviously stored channel value to detect the edge. Balance the\nregulator on the I2C error path so the reference count stays consistent\nif the write fails.","state":0,"publishedAt":"2026-09-16T10:32:25.608+00:00","modifiedAt":"2026-10-19T08:55:10.788+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/dac/m62332.c\"\n ],\n \"versions\": [\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"bac0ed8bee651aa841375edf72c6ab1d10ac80c6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"9263b9ad968a563337a60e0eb66e35186e1faf9a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"1d3a7d7dd3adee19e00be2b2237140f0fe169484\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"f5acb824277a97a5210c454872202bf7f08c75d4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"ae18d2d2ef27a4d04fda6e30c23774513dc9be1e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"9fe22f563b2a0fdb11fd3711a8c39c023629c08a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"b87b0c0f81e8d11c881b726b886b7502ab67d884\",\n \"lessThan\": \"a130404ce0b69ca1438126bd81c1985d3b4d2e6f\",\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/dac/m62332.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.270\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.221\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\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":[],"references":["https://git.kernel.org/stable/c/bac0ed8bee651aa841375edf72c6ab1d10ac80c6","https://git.kernel.org/stable/c/9263b9ad968a563337a60e0eb66e35186e1faf9a","https://git.kernel.org/stable/c/1d3a7d7dd3adee19e00be2b2237140f0fe169484","https://git.kernel.org/stable/c/f5acb824277a97a5210c454872202bf7f08c75d4","https://git.kernel.org/stable/c/ae18d2d2ef27a4d04fda6e30c23774513dc9be1e","https://git.kernel.org/stable/c/08ac8d2976d57aa943d64e351c4d0bd8bb0c6de9","https://git.kernel.org/stable/c/9fe22f563b2a0fdb11fd3711a8c39c023629c08a","https://git.kernel.org/stable/c/a130404ce0b69ca1438126bd81c1985d3b4d2e6f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89936","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89936","identifiers":["CVE-2026-89936"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-4ea6782deedb4e83a378ec6eb286eb96","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T04:13:53.1530931+00:00","lastSuccessAt":"2026-11-09T04:13:53.209194+00:00","error":null,"lastVerifiedAt":"2026-11-09T04:13:53.209194+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T04:03:51.7811525+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T04:03:51.7811525+00:00","lastSuccessAt":"2026-11-09T04:03:51.948408+00:00","error":null,"lastVerifiedAt":"2026-11-09T04:03:51.9484081+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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