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().

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00036.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < b8b2965932e702b21e335ff30e1bb550f5a23b6f
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < b3275dde570b6420106a715bb58a0af041b94d95
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 1fb79478695d92bab1c120ad3dad05252b02a29d
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 7a09c64b7da0abdec3919812e3d93ecc44069ed0
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 8bf037279b5869ae9331c42bb1527d2680ebba96
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 1e8cd93ae536581562bab4e1d8c5315bbc2548bf
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 66d461a92f32b6995b630625d350259b6b1f961b
6f51be3d37dff73cf8db771df4169f4c2f1cbf66 affected < 9972e6b404884adae9eec7463e30d9b3c9a70b18
Linux Linux affected
Version Status Constraints
2.6.36 affected —
0 unaffected < 2.6.36
4.9.332 unaffected ≤ 4.9.*
4.14.298 unaffected ≤ 4.14.*
4.19.264 unaffected ≤ 4.19.*
5.4.223 unaffected ≤ 5.4.*
5.10.153 unaffected ≤ 5.10.*
5.15.77 unaffected ≤ 5.15.*
6.0.7 unaffected ≤ 6.0.*
6.1 unaffected ≤ *

No data.

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1e8cd93ae536581562bab4e1d8c5315bbc2548bf cve-icon cve-icon
https://git.kernel.org/stable/c/1fb79478695d92bab1c120ad3dad05252b02a29d cve-icon cve-icon
https://git.kernel.org/stable/c/66d461a92f32b6995b630625d350259b6b1f961b cve-icon cve-icon
https://git.kernel.org/stable/c/7a09c64b7da0abdec3919812e3d93ecc44069ed0 cve-icon cve-icon
https://git.kernel.org/stable/c/8bf037279b5869ae9331c42bb1527d2680ebba96 cve-icon cve-icon
https://git.kernel.org/stable/c/9972e6b404884adae9eec7463e30d9b3c9a70b18 cve-icon cve-icon
https://git.kernel.org/stable/c/b3275dde570b6420106a715bb58a0af041b94d95 cve-icon cve-icon
https://git.kernel.org/stable/c/b8b2965932e702b21e335ff30e1bb550f5a23b6f cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025120935-CVE-2022-50640-324c@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50640 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50640 cve-icon
History

Wed, 10 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Tue, 09 Dec 2025 00:30:00 +0000

Type Values Removed Values Added
Description 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().
Title mmc: core: Fix kernel panic when remove non-standard SDIO card
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-09T00:00:13.871Z

Reserved: 2025-12-08T23:57:43.370Z

Link: CVE-2022-50640

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-09T01:16:46.410

Modified: 2025-12-09T18:37:13.640

Link: CVE-2022-50640

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-09T00:00:00Z

Links: CVE-2022-50640 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.