{"id":"CVE-2026-98086","revision":"8c68c4e91a88415183fdf0bfc1bd319a","records":[{"revision":"8c68c4e91a88415183fdf0bfc1bd319a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98086","aliases":[],"title":"ALSA: ump: do not touch legacy_rmidi before it exists","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ump: do not touch legacy_rmidi before it exists\n\nsnd_ump_parse_endpoint() sets ump->parsed on every exit, including\nerror, before the caller attaches the legacy rawmidi device.\nump_handle_ep_name_msg() then treats parsed as \"legacy_rmidi is live\"\nand calls ump_legacy_set_rawmidi_name(), which snprintf()s into\nump->legacy_rmidi->name. If a UMP packet arrives in that window\n(IRQ path from snd_ump_receive), legacy_rmidi is still NULL\n(KASAN null-ptr-deref in snprintf).\n\nGuard the legacy helpers. parsed only means endpoint info was\nparsed, not that legacy_rmidi exists.","state":0,"publishedAt":"2026-09-25T10:24:21.086+00:00","modifiedAt":"2026-10-19T09:13:38.462+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                        \"sound/core/ump.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"37e0e14128e0685267dc5c037bf655421a6ce2ea\",\n                            \"lessThan\": \"d6f9af093dc91dac8848a01e417b8109c651c0b2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"37e0e14128e0685267dc5c037bf655421a6ce2ea\",\n                            \"lessThan\": \"1c8e01792adf91879322f1ad752f1814de8b7e7d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"37e0e14128e0685267dc5c037bf655421a6ce2ea\",\n                            \"lessThan\": \"228075f31b141395233218712242913125ace4e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"37e0e14128e0685267dc5c037bf655421a6ce2ea\",\n                            \"lessThan\": \"a4cef20cd473e0640fefd38094d4baac0ec76ae3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"37e0e14128e0685267dc5c037bf655421a6ce2ea\",\n                            \"lessThan\": \"adeee7187694719890aaffdc14b7e89cfd736f1d\",\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                        \"sound/core/ump.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\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/d6f9af093dc91dac8848a01e417b8109c651c0b2","https://git.kernel.org/stable/c/1c8e01792adf91879322f1ad752f1814de8b7e7d","https://git.kernel.org/stable/c/228075f31b141395233218712242913125ace4e0","https://git.kernel.org/stable/c/a4cef20cd473e0640fefd38094d4baac0ec76ae3","https://git.kernel.org/stable/c/adeee7187694719890aaffdc14b7e89cfd736f1d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98086","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98086","identifiers":["CVE-2026-98086"]},"retained":false,"historicalAffected":[]}],"coverage":[]}