{"id":"CVE-2026-89440","revision":null,"records":[{"revision":"7264fc4c41bb4492ba199fb0810db5c5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89440","aliases":[],"title":"mmc: via-sdmmc: stop card-detect handling on probe failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: via-sdmmc: stop card-detect handling on probe failure\n\nrequest_irq() registers the SD card-detect interrupt and the probe enables\nit before mmc_add_host() runs. If mmc_add_host() fails, the error path only\nunmaps the registers and returns: the interrupt stays registered, so the\nhandler keeps running against the host once it is freed. via_sdc_isr()\ndereferences sdhost and its MMIO base and schedules carddet_work, which\nvia_sdc_card_detect() also runs against freed memory through its\ncontainer_of() dereference.\n\nAdd a probe-error path that disables and frees the interrupt and cancels\ncarddet_work before unmapping. carddet_work can re-enable the device\ninterrupt via via_reset_pcictrl(), which restores PCIINTCTRL, so mask it\nagain after cancelling the work.\n\nThis issue was found by an in-house static analysis tool and confirmed by\nmanual code review.","state":0,"publishedAt":"2026-09-11T19:43:09.402+00:00","modifiedAt":"2026-10-19T08:46:49.77+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/mmc/host/via-sdmmc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"63400da6cd37a9793c19bb6aed7131b58b975a04\",\n \"lessThan\": \"5bb5327b92aae17e91c7228953c350a6ee3c94e8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0959cc1685eb19774300d43ef25e318b457b156b\",\n \"lessThan\": \"d045596706d1b25d38af4a79980b017639fea9d1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ba91b413983a9235792523c6b9f7ba2586c4d75d\",\n \"lessThan\": \"806409f12fdb14c9e4c56a64494c9b75f356cd49\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4e46fb61e3bb4628170810d3f2b996b709b90d9\",\n \"lessThan\": \"dde5b9c91e9fc64e54a2f186d3ae95868b4dbb02\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4e46fb61e3bb4628170810d3f2b996b709b90d9\",\n \"lessThan\": \"efe7f25dd27e35063477b4b0e7eed3675669fd99\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4e46fb61e3bb4628170810d3f2b996b709b90d9\",\n \"lessThan\": \"2550f89589caad7402d618d7dffc038582c94b6b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4e46fb61e3bb4628170810d3f2b996b709b90d9\",\n \"lessThan\": \"c2b8a624911999399cc14822fec3e35032b3cee4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e4e46fb61e3bb4628170810d3f2b996b709b90d9\",\n \"lessThan\": \"088eaa92fcebaa6b957ccf9635afdf39643a577d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"076bcd2c93e16b05c10564e299d6e5d26a766d00\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"12b8e81b77c05c658efd9cde3585bbd65ae39b59\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"95025a8dd0ec015872f6c16473fe04d6264e68ca\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f59ef2a47a228e51322ad76752a55a8917c56e38\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"0ec94795114edc7e24ec71849dce42bfa61dafa3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.163\",\n \"lessThan\": \"5.10.270\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.86\",\n \"lessThan\": \"5.15.221\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.2\",\n \"lessThan\": \"6.1.188\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.9.337\",\n \"lessThan\": \"4.10\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.303\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.270\",\n \"lessThan\": \"4.20\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.229\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.0.16\",\n \"lessThan\": \"6.1\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\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/mmc/host/via-sdmmc.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.2\",\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\": \"6.12.109\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.50\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.4\",\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/5bb5327b92aae17e91c7228953c350a6ee3c94e8","https://git.kernel.org/stable/c/d045596706d1b25d38af4a79980b017639fea9d1","https://git.kernel.org/stable/c/806409f12fdb14c9e4c56a64494c9b75f356cd49","https://git.kernel.org/stable/c/dde5b9c91e9fc64e54a2f186d3ae95868b4dbb02","https://git.kernel.org/stable/c/efe7f25dd27e35063477b4b0e7eed3675669fd99","https://git.kernel.org/stable/c/2550f89589caad7402d618d7dffc038582c94b6b","https://git.kernel.org/stable/c/c2b8a624911999399cc14822fec3e35032b3cee4","https://git.kernel.org/stable/c/088eaa92fcebaa6b957ccf9635afdf39643a577d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89440","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89440","identifiers":["CVE-2026-89440"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all 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