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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (28.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Denx U-Boot — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- source.denx.de/u-boot/u-boot/-/commit/35f75d2a46e5859138c83a75cd2f4141c5479ab9 (Patch)
- www.openwall.com/lists/oss-security/2025/02/17/2 (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.