CVE-2021-47166
MediumIn the Linux kernel, the following vulnerability has been resolved: NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce() The value of mirror->pg_bytes_written should only be updated after a successful attempt to flush out the requests on the list.
CVSS 3.1 score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-787CVE-2021-47166 is a Out-of-bounds Write vulnerability
What is Out-of-bounds Write?
The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE
Affected versions
Linux kernel versions
4.0
and later are affected. Fixed in
4.4.271,
4.9.271,
4.14.235,
4.19.193,
5.4.124,
5.10.42,
5.12.9,
5.13
and their respective stable series.
References
8 total-
Patch
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Patch
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Patch
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Patch
Frequently asked questions
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What is CVE-2021-47166?
CVE-2021-47166 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 4.0 onward and has been patched in 4.4.271, 4.9.271, 4.14.235 and others. CVE-2021-47166 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2021-47166?
CVE-2021-47166 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2021-47166?
Yes. CVE-2021-47166 has been patched. Fixed versions include 4.4.271, 4.9.271, 4.14.235 and others. If you are running Linux kernel 4.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2021-47166 actively exploited?
No. CVE-2021-47166 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.