CVE-2024-45779: Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
First published: Fri Feb 14 2025(Updated: )
An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| CentOS Grub2-pc-modules |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-45779?
CVE-2024-45779 has been rated as a medium severity vulnerability.
How do I fix CVE-2024-45779?
To mitigate CVE-2024-45779, upgrade to the latest version of the grub2 package that includes the security patch.
What systems are affected by CVE-2024-45779?
CVE-2024-45779 affects systems using the GNU grub2 file system driver, particularly those with a BFS filesystem.
What impact does CVE-2024-45779 have?
CVE-2024-45779 can potentially lead to system crashes or improper file handling due to an integer overflow during file reading.
Is CVE-2024-45779 exploit possible?
Yes, CVE-2024-45779 can be exploited if a malicious or corrupted BFS filesystem is used.
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