CVE-2022-50858
In the Linux kernel, the following vulnerability has been resolved: mmc: alcor: 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 calling mmc_free_host() in the error path.
Affected versions
Linux kernel versions
5.0
and later are affected. Fixed in
5.4.229,
5.10.163,
5.15.86,
6.0.16,
6.1.2,
6.2
and their respective stable series.
References
The following references provide additional information about CVE-2022-50858 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/289c964fe182ce755044a6cd57698072e12ffa6f
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PatchKernel patch commithttps://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272
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PatchKernel patch commithttps://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914
Frequently asked questions
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What is CVE-2022-50858?
CVE-2022-50858 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.0 onward and has been patched in 5.4.229, 5.10.163, 5.15.86 and others. CVE-2022-50858 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-2022-50858?
Yes — CVE-2022-50858 has been patched. Fixed versions include 5.4.229, 5.10.163, 5.15.86 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50858 actively exploited?
No — CVE-2022-50858 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.