CVE-2022-50640
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().
Affected versions
Linux kernel versions
2.6.36
and later are affected. Fixed in
4.9.332,
4.14.298,
4.19.264,
5.4.223,
5.10.153,
5.15.77,
6.0.7,
6.1
and their respective stable series.
References
The following references provide additional information about CVE-2022-50640 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1e8cd93ae536581562bab4e1d8c5315bbc2548bf
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PatchKernel patch commithttps://git.kernel.org/stable/c/1fb79478695d92bab1c120ad3dad05252b02a29d
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PatchKernel patch commithttps://git.kernel.org/stable/c/66d461a92f32b6995b630625d350259b6b1f961b
Frequently asked questions
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What is CVE-2022-50640?
CVE-2022-50640 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.36 onward and has been patched in 4.9.332, 4.14.298, 4.19.264 and others. CVE-2022-50640 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2022-50640?
Yes — CVE-2022-50640 has been patched. Fixed versions include 4.9.332, 4.14.298, 4.19.264 and others. If you are running Linux kernel 2.6.36 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50640 actively exploited?
No — CVE-2022-50640 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.