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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47179 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return() Commit de144ff4234f changes _pnfs_return_layout() to call pnfs_mark_matching_lsegs_return() passing NULL as the struct pnfs_layout_range argument. Unfortunately, pnfs_mark_matching_lsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops. I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.


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/39785761feadf261bc5101372b0b0bbaf6a94494 Patch 
https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 Patch 
https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 Patch 
https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 Patch 
https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 Patch 
https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 Patch 
https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb Patch 
https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb Patch 
https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb Patch 
https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb Patch 
https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a Patch 
https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a Patch 
https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 Patch 
https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47179
NVD Published Date:
03/25/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org