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CVE-2022-50846

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

mmc: via-sdmmc: fix return value check of mmc_add_host()

mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del().

Fix this by checking the return value and goto error path which will call mmc_free_host().

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50846",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "f0bf7f61b8405224bc52fc9a3ccd167a68126e00",
              "lessThan": "076bcd2c93e16b05c10564e299d6e5d26a766d00",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0bf7f61b8405224bc52fc9a3ccd167a68126e00",
              "lessThan": "12b8e81b77c05c658efd9cde3585bbd65ae39b59",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0bf7f61b8405224bc52fc9a3ccd167a68126e00",
              "lessThan": "95025a8dd0ec015872f6c16473fe04d6264e68ca",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0bf7f61b8405224bc52fc9a3ccd167a68126e00",
              "lessThan": "f59ef2a47a228e51322ad76752a55a8917c56e38",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f0bf7f61b8405224bc52fc9a3ccd167a68126e00",
              "lessThan": "63400da6cd37a9793c19bb6aed7131b58b975a04",
              "versionType": "git"
            },
            {
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              "lessThan": "0959cc1685eb19774300d43ef25e318b457b156b",
              "versionType": "git"
            },
            {
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              "lessThan": "0ec94795114edc7e24ec71849dce42bfa61dafa3",
              "versionType": "git"
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              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/mmc/host/via-sdmmc.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.31"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.31",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/mmc/host/via-sdmmc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:15:59.243",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: via-sdmmc: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value,\nit will lead two issues:\n1. The memory that allocated in mmc_alloc_host() is leaked.\n2. In the remove() path, mmc_remove_host() will be called to\n   delete device, but it's not added yet, it will lead a kernel\n   crash because of null-ptr-deref in device_del().\n\nFix this by checking the return value and goto error path which\nwill call mmc_free_host()."
    }
  ],
  "lastModified": "2026-06-17T05:24:17.267",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}