{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "37e0e14128e0685267dc5c037bf655421a6ce2ea"
            },
            {
              "fixed": "1c8e01792adf91879322f1ad752f1814de8b7e7d"
            },
            {
              "fixed": "228075f31b141395233218712242913125ace4e0"
            },
            {
              "fixed": "a4cef20cd473e0640fefd38094d4baac0ec76ae3"
            },
            {
              "fixed": "adeee7187694719890aaffdc14b7e89cfd736f1d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98086.json"
  },
  "details": "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-\u003eparsed 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-\u003elegacy_rmidi-\u003ename. 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.",
  "id": "CVE-2026-98086",
  "modified": "2026-09-27T03:30:48.561471773Z",
  "published": "2026-09-25T10:24:21.086Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c8e01792adf91879322f1ad752f1814de8b7e7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/228075f31b141395233218712242913125ace4e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4cef20cd473e0640fefd38094d4baac0ec76ae3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/adeee7187694719890aaffdc14b7e89cfd736f1d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98086.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98086"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ALSA: ump: do not touch legacy_rmidi before it exists"
}