CVE-2026-71971

HighCVSS 8.2/10Last modified Sep 30, 2026

Description

U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netboot to corrupt adjacent memory and crash the bootloader.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness enumeration

CWE-787

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
u-boot	u-boot	< 2026.10-rc3

References

Timeline

Published: Sep 29, 2026
Last modified: Sep 30, 2026
NVD status: Awaiting Analysis

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