CVE-2022-50746
In the Linux kernel, the following vulnerability has been resolved: erofs: validate the extent length for uncompressed pclusters syzkaller reported a KASAN use-after-free: https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2 The referenced fuzzed image actually has two issues: - m_pa == 0 as a non-inlined pcluster; - The logical length is longer than its physical length. The first issue has already been addressed. This patch addresses the second issue by checking the extent length validity.
Affected versions
Linux kernel versions
4.19
and later are affected. Fixed in
6.0.16,
6.1.2,
6.2
and their respective stable series.
References
The following references provide additional information about CVE-2022-50746 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/40c73b2ea9611b5388807be406f30f5e4e1162da
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PatchKernel patch commithttps://git.kernel.org/stable/c/c505feba4c0d76084e56ec498ce819f02a7043ae
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PatchKernel patch commithttps://git.kernel.org/stable/c/dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e
Frequently asked questions
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What is CVE-2022-50746?
CVE-2022-50746 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19 onward and has been patched in 6.0.16, 6.1.2 and 6.2. CVE-2022-50746 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-2022-50746?
Yes — CVE-2022-50746 has been patched. Fixed versions include 6.0.16, 6.1.2 and 6.2. If you are running Linux kernel 4.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50746 actively exploited?
No — CVE-2022-50746 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.