SB2020091302 - NULL pointer dereference in Linux kernel mm

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Main Vulnerability Database SB2020091302

SB2020091302 - NULL pointer dereference in Linux kernel mm

Published: September 13, 2020

Security Bulletin ID SB2020091302
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2020-25285)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to execute arbitrary code.

The vulnerability exists due to NULL pointer dereference within the allowed_mems_nr(), hugetlb_sysctl_handler_common() and hugetlb_overcommit_handler() functions in mm/hugetlb.c. A local privileged user can execute arbitrary code.


Remediation

Install update from vendor's website.

References