CVE Vulnerabilities


Improper Initialization

Published: Feb 18, 2020 | Modified: Mar 04, 2020
CVSS 3.x
CVSS 2.x
2.1 LOW

In FreeBSD 12.1-STABLE before r354734, 12.1-RELEASE before 12.1-RELEASE-p2, 12.0-RELEASE before 12.0-RELEASE-p13, 11.3-STABLE before r354735, and 11.3-RELEASE before 11.3-RELEASE-p6, due to incorrect initialization of a stack data structure, core dump files may contain up to 20 bytes of kernel data previously stored on the stack.


The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Software

Name Vendor Start Version End Version
Freebsd Freebsd 11.3 (including) 11.3 (including)
Freebsd Freebsd 11.3-p1 (including) 11.3-p1 (including)
Freebsd Freebsd 11.3-p2 (including) 11.3-p2 (including)
Freebsd Freebsd 11.3-p3 (including) 11.3-p3 (including)
Freebsd Freebsd 11.3-p4 (including) 11.3-p4 (including)
Freebsd Freebsd 11.3-p5 (including) 11.3-p5 (including)
Freebsd Freebsd 12.0 (including) 12.0 (including)
Freebsd Freebsd 12.0-p1 (including) 12.0-p1 (including)
Freebsd Freebsd 12.0-p10 (including) 12.0-p10 (including)
Freebsd Freebsd 12.0-p11 (including) 12.0-p11 (including)
Freebsd Freebsd 12.0-p12 (including) 12.0-p12 (including)
Freebsd Freebsd 12.0-p2 (including) 12.0-p2 (including)
Freebsd Freebsd 12.0-p3 (including) 12.0-p3 (including)
Freebsd Freebsd 12.0-p4 (including) 12.0-p4 (including)
Freebsd Freebsd 12.0-p6 (including) 12.0-p6 (including)
Freebsd Freebsd 12.0-p7 (including) 12.0-p7 (including)
Freebsd Freebsd 12.0-p8 (including) 12.0-p8 (including)
Freebsd Freebsd 12.0-p9 (including) 12.0-p9 (including)
Freebsd Freebsd 12.1 (including) 12.1 (including)
Freebsd Freebsd 12.1-p1 (including) 12.1-p1 (including)

Potential Mitigations

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.