{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e4e46fb61e3bb4628170810d3f2b996b709b90d9"
            },
            {
              "fixed": "efe7f25dd27e35063477b4b0e7eed3675669fd99"
            },
            {
              "fixed": "2550f89589caad7402d618d7dffc038582c94b6b"
            },
            {
              "fixed": "c2b8a624911999399cc14822fec3e35032b3cee4"
            },
            {
              "fixed": "088eaa92fcebaa6b957ccf9635afdf39643a577d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "076bcd2c93e16b05c10564e299d6e5d26a766d00"
            },
            {
              "last_affected": "12b8e81b77c05c658efd9cde3585bbd65ae39b59"
            },
            {
              "last_affected": "95025a8dd0ec015872f6c16473fe04d6264e68ca"
            },
            {
              "last_affected": "f59ef2a47a228e51322ad76752a55a8917c56e38"
            },
            {
              "last_affected": "63400da6cd37a9793c19bb6aed7131b58b975a04"
            },
            {
              "last_affected": "0959cc1685eb19774300d43ef25e318b457b156b"
            },
            {
              "last_affected": "0ec94795114edc7e24ec71849dce42bfa61dafa3"
            },
            {
              "last_affected": "ba91b413983a9235792523c6b9f7ba2586c4d75d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.9.337"
            },
            {
              "fixed": "4.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.14.303"
            },
            {
              "fixed": "4.15"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.19.270"
            },
            {
              "fixed": "4.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.229"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.10.163"
            },
            {
              "fixed": "5.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.86"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.0.16"
            },
            {
              "fixed": "6.1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.2"
            },
            {
              "fixed": "6.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89440.json"
  },
  "details": "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.",
  "id": "CVE-2026-89440",
  "modified": "2026-09-13T03:30:29.333036267Z",
  "published": "2026-09-11T19:43:09.402Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/088eaa92fcebaa6b957ccf9635afdf39643a577d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2550f89589caad7402d618d7dffc038582c94b6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2b8a624911999399cc14822fec3e35032b3cee4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efe7f25dd27e35063477b4b0e7eed3675669fd99"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89440.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89440"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "mmc: via-sdmmc: stop card-detect handling on probe failure"
}