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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-46952 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds Fix shift out-of-bounds in xprt_calc_majortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller. If the protocol is XPRT_TRANSPORT_UDP, then 'retrans' is a shift value for a 64-bit long integer, so 'retrans' cannot be >= 64. If it is >= 64, fail the mount and return an error.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897 Patch 
https://git.kernel.org/stable/c/2f3380121d49e829fb73ba86240c181bc32ad897 Patch 
https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8 Patch 
https://git.kernel.org/stable/c/3d0163821c035040a46d816a42c0780f0f0a30a8 Patch 
https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2 Patch 
https://git.kernel.org/stable/c/96fa26b74cdcf9f5c98996bf36bec9fb5b19ffe2 Patch 
https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59 Patch 
https://git.kernel.org/stable/c/c09f11ef35955785f92369e25819bf0629df2e59 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-46952
NVD Published Date:
02/27/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org