SB2022030911 - Information disclosure in Linux kernel NFS implementation

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Main Vulnerability Database SB2022030911

SB2022030911 - Information disclosure in Linux kernel NFS implementation

Published: March 9, 2022

Security Bulletin ID SB2022030911
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing initialization of resource (CVE-ID: CVE-2022-24448)

CWE-ID: CWE-909 - Missing initialization of resource

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to missing initialization of resource within the fs/nfs/dir.c in the Linux kernel. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.


Remediation

Install update from vendor's website.

References