CVE-2024-57256

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-18 · updated 2026-06-17
Weakness: CWE-190

Description

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.

Affected products

u-boot: through 2024.10

References

https://source.denx.de/u-boot/u-boot/-/commit/35f75d2a46e5859138c83a75cd2f4141c5479ab9
https://www.openwall.com/lists/oss-security/2025/02/17/2
https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
https://cert-portal.siemens.com/productcert/html/ssa-577017.html

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