PT-2026-81207
CVE-2026-71973
·
Published
2026-08-25
·
Updated
2026-09-29
Description by
CVSS 4.0
5.2
MediumMetricsAV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
U-Boot versions prior to 2026.10-rc4
Description
An integer overflow occurs in the
sqfs read directory table() function during the allocation of the directory table buffer. A remote attacker can provide a specially crafted SquashFS image containing a controlled metablks count value in the superblock. This leads to a heap buffer under-allocation and subsequent out-of-bounds writes, which corrupts heap memory and causes the bootloader to crash.Recommendations
Update to version 2026.10-rc4 or later.
Exploitability
Exploit
Fix
Impacts
Researchers
Vendors
Affected products
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