{"id":"CVE-2026-98086","title":"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 r…","summary":"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 r…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 37e0e14128e0685267dc5c037bf655421a6ce2ea < 1c8e01792adf91879322f1ad752f1814de8b7e7d","Linux >= 37e0e14128e0685267dc5c037bf655421a6ce2ea < 228075f31b141395233218712242913125ace4e0","Linux >= 37e0e14128e0685267dc5c037bf655421a6ce2ea < a4cef20cd473e0640fefd38094d4baac0ec76ae3","Linux >= 37e0e14128e0685267dc5c037bf655421a6ce2ea < adeee7187694719890aaffdc14b7e89cfd736f1d","Linux 6.5"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:38.200","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98086","references":[{"url":"https://git.kernel.org/stable/c/1c8e01792adf91879322f1ad752f1814de8b7e7d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/228075f31b141395233218712242913125ace4e0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a4cef20cd473e0640fefd38094d4baac0ec76ae3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/adeee7187694719890aaffdc14b7e89cfd736f1d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.834Z","slug":"CVE-2026-98086","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}