Bug 2420263 (CVE-2022-50640) - CVE-2022-50640 kernel: mmc: core: Fix kernel panic when remove non-standard SDIO card
Summary: CVE-2022-50640 kernel: mmc: core: Fix kernel panic when remove non-standard S...
Keywords:
Status: NEW
Alias: CVE-2022-50640
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-09 01:04 UTC by OSIDB Bzimport
Modified: 2025-12-16 14:26 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2025-12-09 01:04:12 UTC 
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().
Comment 1 Alexander B 2025-12-10 06:19:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120935-CVE-2022-50640-324c@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.