Medium severity · published Mar 3, 2025
CVE-2024-45779
Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
6.0
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Grub2 · Gnu
through 2.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-45779
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-45779
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2024-45779
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2345854
Mailing List
https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html
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