GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

FKIE_CVE-2022-50886

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 05:24
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: toshsd: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and goto error path which will call mmc_free_host(), besides, free_irq() also needs be called.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3329e7b7132ca727263fb0ee214cf52cc6dcaaad
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34ae492f8d172f0bd193c24cad588b35419ea47a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3dbb69a0242c31ea4c9eee22b1c41b515fe509a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6444079767b68b1fbed0e7668081146e80dcb719
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/647e370dd0ef7e212d8d014bda748e461eab2e8c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aabbedcb6c9a72d12d35dc672e83f0c8064d8a61
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfd77b194c94aefbde4efc30ddf8607dd9244672
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f670744a316ea983113a65313dcd387b5a992444
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/toshsd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "34ae492f8d172f0bd193c24cad588b35419ea47a",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "3329e7b7132ca727263fb0ee214cf52cc6dcaaad",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "3dbb69a0242c31ea4c9eee22b1c41b515fe509a0",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "aabbedcb6c9a72d12d35dc672e83f0c8064d8a61",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "6444079767b68b1fbed0e7668081146e80dcb719",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "647e370dd0ef7e212d8d014bda748e461eab2e8c",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "bfd77b194c94aefbde4efc30ddf8607dd9244672",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            },
            {
              "lessThan": "f670744a316ea983113a65313dcd387b5a992444",
              "status": "affected",
              "version": "a5eb8bbd66ccf9f169419f9652544aec771b7c57",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/toshsd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.19"
            },
            {
              "lessThan": "3.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: toshsd: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value, the memory\nthat allocated in mmc_alloc_host() will be leaked and it will lead a kernel\ncrash because of deleting not added device in the remove path.\n\nSo fix this by checking the return value and goto error path which will call\nmmc_free_host(), besides, free_irq() also needs be called."
    }
  ],
  "id": "CVE-2022-50886",
  "lastModified": "2026-06-17T05:24:21.283",
  "metrics": {},
  "published": "2025-12-30T13:16:03.720",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3329e7b7132ca727263fb0ee214cf52cc6dcaaad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/34ae492f8d172f0bd193c24cad588b35419ea47a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3dbb69a0242c31ea4c9eee22b1c41b515fe509a0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6444079767b68b1fbed0e7668081146e80dcb719"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/647e370dd0ef7e212d8d014bda748e461eab2e8c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aabbedcb6c9a72d12d35dc672e83f0c8064d8a61"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bfd77b194c94aefbde4efc30ddf8607dd9244672"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f670744a316ea983113a65313dcd387b5a992444"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.