CVE-2021-20225

Related Vulnerabilities: CVE-2021-20225  

A flaw was found in grub2. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Description

A flaw was found in grub2. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Additional Information

  • Bugzilla 1924696: CVE-2021-20225 grub2: Heap out-of-bounds write in short form option parser
  • CWE-787: Out-of-bounds Write
  • FAQ: Frequently asked questions about CVE-2021-20225