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CVE-2022-50886 (GCVE-0-2022-50886)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:34 – Updated: 2026-05-11 19:27
VLAI
Title
mmc: toshsd: fix return value check of mmc_add_host()
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 34ae492f8d172f0bd193c24cad588b35419ea47a (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 3329e7b7132ca727263fb0ee214cf52cc6dcaaad (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0 (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < aabbedcb6c9a72d12d35dc672e83f0c8064d8a61 (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 6444079767b68b1fbed0e7668081146e80dcb719 (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 647e370dd0ef7e212d8d014bda748e461eab2e8c (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < bfd77b194c94aefbde4efc30ddf8607dd9244672 (git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < f670744a316ea983113a65313dcd387b5a992444 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "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."
        }
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/34ae492f8d172f0bd193c24cad588b35419ea47a"
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          "url": "https://git.kernel.org/stable/c/f670744a316ea983113a65313dcd387b5a992444"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50886",
    "datePublished": "2025-12-30T12:34:12.782Z",
    "dateReserved": "2025-12-30T12:26:05.425Z",
    "dateUpdated": "2026-05-11T19:27:02.120Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:34:49+00:00",
      "cve": "CVE-2022-50886",
      "id": "CVE-2022-50886",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "174",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mmc: toshsd: fix return value check of mmc_add_host()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50886.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:23:23Z",
      "cve": "CVE-2022-50886",
      "id": "CVE-2022-50886",
      "initial_release_date": "2025-12-31T00:30:30Z",
      "product_status:known_affected": "354",
      "product_status:known_not_affected": "432",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50886",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50886.json",
      "version": "26"
    }
  }
}



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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

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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.