SB2019112130 - NULL pointer dereference in Linux kernel

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Main Vulnerability Database SB2019112130

SB2019112130 - NULL pointer dereference in Linux kernel

Published: November 21, 2019 Updated: June 1, 2020

Security Bulletin ID SB2019112130
CSH Severity
Medium
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2019-19037)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) can be zero. A remote attacker can perform a denial of service (DoS) attack.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References