RUSTSEC-2020-0100

Double free when calling sys_info::disk_info from multiple threads

Issued
Package
sys-info (crates.io)
Type
Vulnerability
Categories
  • memory-corruption
Details
https://github.com/FillZpp/sys-info-rs/issues/63
Patched
  • >=0.8.0
Keywords
  • concurrency
  • double free
Affected OSes
  • linux
Affected Functions
Version
sys_info::disk_info
  • <=0.1.1

Description

Affected versions of sys-info use a static, global, list to store temporary disk information while running. The function that cleans up this list, DFCleanup, assumes a single threaded environment and will try to free the same memory twice in a multithreaded environment.

This results in consistent double-frees and segfaults when calling sys_info::disk_info from multiple threads at once.

The issue was fixed by moving the global variable into a local scope.

Safer Alternatives:

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