{"id":"CVE-2026-99035","revision":"ebb3089486784fa4a949172c5383b66f","records":[{"revision":"ebb3089486784fa4a949172c5383b66f","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-99035","aliases":[],"title":"mmc: mtk-sd: Cancel request timeout work on remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: mtk-sd: Cancel request timeout work on remove\n\nThe driver queues req_timeout while a request is active.\nmsdc_request_done() uses cancel_delayed_work(), which does not wait for\na timeout callback that has already started.\n\nThe timeout callback calls mmc_request_done(), which wakes the request\nwaiter, and then continues to use host->dev_comp and check the SDIO IRQ.\nDuring unbind, msdc_drv_remove() can return and the managed mmc_host can\nbe freed before the callback finishes.\n\nKASAN reported use-after-free accesses in msdc_request_done() and\nmsdc_recheck_sdio_irq() in each of three unbind tests.  The same tests\ncompleted without a kernel diagnostic after this change.\n\nCall cancel_delayed_work_sync() after mmc_remove_host() has stopped new\nrequests and before the driver releases the host resources.","state":0,"publishedAt":"2026-10-23T12:21:44.522+00:00","modifiedAt":"2026-10-23T12:21:44.522+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/mtk-sd.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"208489032bdd8d4a7de50f3057c175058f271956\",\n                            \"lessThan\": \"9e799f25c420e759641eb25102967ea091fc758f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"208489032bdd8d4a7de50f3057c175058f271956\",\n                            \"lessThan\": \"f37e0367ad6f2147a0b37564b442b7a25bec0d23\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"208489032bdd8d4a7de50f3057c175058f271956\",\n                            \"lessThan\": \"46e75703ca3f00fb8c935b3ce35b90836e34e8af\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"208489032bdd8d4a7de50f3057c175058f271956\",\n                            \"lessThan\": \"edef1355224c0799a502a46b71d3649fa0dd218e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"208489032bdd8d4a7de50f3057c175058f271956\",\n                            \"lessThan\": \"b38af5386a74416e898955443f2e26547b358cb2\",\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/mmc/host/mtk-sd.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\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\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/9e799f25c420e759641eb25102967ea091fc758f","https://git.kernel.org/stable/c/f37e0367ad6f2147a0b37564b442b7a25bec0d23","https://git.kernel.org/stable/c/46e75703ca3f00fb8c935b3ce35b90836e34e8af","https://git.kernel.org/stable/c/edef1355224c0799a502a46b71d3649fa0dd218e","https://git.kernel.org/stable/c/b38af5386a74416e898955443f2e26547b358cb2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99035","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99035","identifiers":["CVE-2026-99035"]},"retained":false,"historicalAffected":[]}],"coverage":[]}