Description
U-Boot before 2026.10-rc4 contains an integer overflow vulnerability in sqfs_read_directory_table() function when allocating the directory table buffer. Attackers can supply a crafted SquashFS image with an attacker-controlled superblock metablks_count value that causes heap buffer under-allocation and out-of-bounds writes, corrupting heap memory and crashing the bootloader.
Metrics
CVSS 3.1 5.2/10
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
No affected versions have been published.
Timeline
- Published
- Sep 29, 2026
- Last modified
- Oct 2, 2026
- NVD status
- Awaiting Analysis