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CVE-2022-50640 (GCVE-0-2022-50640)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2026-05-11 19:22
VLAI
Title
mmc: core: Fix kernel panic when remove non-standard SDIO card
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: core: Fix kernel panic when remove non-standard SDIO card SDIO tuple is only allocated for standard SDIO card, especially it causes memory corruption issues when the non-standard SDIO card has removed, which is because the card device's reference counter does not increase for it at sdio_init_func(), but all SDIO card device reference counter gets decreased at sdio_release_func().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < b8b2965932e702b21e335ff30e1bb550f5a23b6f (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < b3275dde570b6420106a715bb58a0af041b94d95 (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 1fb79478695d92bab1c120ad3dad05252b02a29d (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 7a09c64b7da0abdec3919812e3d93ecc44069ed0 (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 8bf037279b5869ae9331c42bb1527d2680ebba96 (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 1e8cd93ae536581562bab4e1d8c5315bbc2548bf (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 66d461a92f32b6995b630625d350259b6b1f961b (git)
Affected: 6f51be3d37dff73cf8db771df4169f4c2f1cbf66 , < 9972e6b404884adae9eec7463e30d9b3c9a70b18 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 4.9.332 , ≤ 4.9.* (semver)
Unaffected: 4.14.298 , ≤ 4.14.* (semver)
Unaffected: 4.19.264 , ≤ 4.19.* (semver)
Unaffected: 5.4.223 , ≤ 5.4.* (semver)
Unaffected: 5.10.153 , ≤ 5.10.* (semver)
Unaffected: 5.15.77 , ≤ 5.15.* (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: core: Fix kernel panic when remove non-standard SDIO card\n\nSDIO tuple is only allocated for standard SDIO card, especially it causes\nmemory corruption issues when the non-standard SDIO card has removed, which\nis because the card device\u0027s reference counter does not increase for it at\nsdio_init_func(), but all SDIO card device reference counter gets decreased\nat sdio_release_func()."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:22:45.426Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "mmc: core: Fix kernel panic when remove non-standard SDIO card",
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    "datePublished": "2025-12-09T00:00:13.871Z",
    "dateReserved": "2025-12-08T23:57:43.370Z",
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    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:55:35+00:00",
      "cve": "CVE-2022-50640",
      "id": "CVE-2022-50640",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "84",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mmc: core: Fix kernel panic when remove non-standard SDIO card",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50640.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:21:58Z",
      "cve": "CVE-2022-50640",
      "id": "CVE-2022-50640",
      "initial_release_date": "2025-12-10T00:39:12Z",
      "product_status:known_affected": "507",
      "product_status:known_not_affected": "209",
      "product_status:recommended": "237",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50640",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50640.json",
      "version": "34"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.