CVE-2022-50653
In the Linux kernel, the following vulnerability has been resolved: mmc: atmel-mci: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). So fix this by checking the return value and calling mmc_free_host() in the error path.
Affected versions
Linux kernel versions
2.6.27
and later are affected. Fixed in
4.19.270,
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-2022-50653 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/00ac0f5f95920f003cd6ece53cdc759549b69118
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PatchKernel patch commithttps://git.kernel.org/stable/c/1925472dec31ec061d57412b3a65a056ea24f340
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PatchKernel patch commithttps://git.kernel.org/stable/c/6bb26abb92f25e582a0976091a10b539fe3796db
Frequently asked questions
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What is CVE-2022-50653?
CVE-2022-50653 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.27 onward and has been patched in 4.19.270, 5.4.229, 5.10.163 and others. CVE-2022-50653 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-2022-50653?
Yes — CVE-2022-50653 has been patched. Fixed versions include 4.19.270, 5.4.229, 5.10.163 and others. If you are running Linux kernel 2.6.27 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50653 actively exploited?
No — CVE-2022-50653 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.