CVE-2026-71973Published

U-Boot before 2026.10-rc4 Integer Overflow in SquashFS Directory Table Allocation

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-71973

Published

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.

Source published: 29 Sep 2026 21:29:21 UTC
Source modified: 2 Oct 2026 12:29:17 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 5.2 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS 3.1 · 5.2 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H