Integer Overflow or Wraparound Affecting u-boot package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.19% (8th percentile)

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  • Snyk IDSNYK-ECHOLATEST-UBOOT-20360858
  • published1 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-71973  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest u-boot.

NVD Description

Note: Versions mentioned in the description apply only to the upstream u-boot package and not the u-boot package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1