CVE-2022-50861
In the Linux kernel, the following vulnerability has been resolved: NFSD: Finish converting the NFSv2 GETACL result encoder The xdr_stream conversion inadvertently left some code that set the page_len of the send buffer. The XDR stream encoders should handle this automatically now. This oversight adds garbage past the end of the Reply message. Clients typically ignore the garbage, but NFSD does not need to send it, as it leaks stale memory contents onto the wire.
Affected versions
Linux kernel versions
5.13
and later are affected. Fixed in
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-2022-50861 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/2b825efb0577a32a872e872a869e0947cf9dd6d3
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PatchKernel patch commithttps://git.kernel.org/stable/c/5030d4d2bf8b6f6f3d16401ab92a88bc5aa2377a
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PatchKernel patch commithttps://git.kernel.org/stable/c/a20b0abab966a189a79aba6ebf41f59024a3224d
Frequently asked questions
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What is CVE-2022-50861?
CVE-2022-50861 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.86, 6.0.16, 6.1.2 and others. CVE-2022-50861 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-2022-50861?
Yes — CVE-2022-50861 has been patched. Fixed versions include 5.15.86, 6.0.16, 6.1.2 and others. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2022-50861 actively exploited?
No — CVE-2022-50861 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.