Integer overflow in Denx U-Boot
CVE-2024-57256
An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.
Vulnerability class: Integer Overflow
EPSS: 0.004 (29.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Denx U-boot — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Patch)
- cve@mitre.org (Mailing List, Third Party Advisory, Mitigation)
- af854a3a-2127-422b-91ae-364da2661108
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2024-57256?
- CVE-2024-57256 is a high-severity vulnerability in Denx U-Boot, classified under Integer Overflow or Wraparound. CVSS score: 7.1/10. Published 2025-02-18.
- How severe is CVE-2024-57256?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2024-57256 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.