CVE WatchJul 14, 2026

CVE-2026-29007

U-Boot through 2026.04-rc3 contains an out-of-bounds read vulnerability in tcp_rx_state_machine() (net/tcp.c) when CONFIG_PROT_TCP is enable

CVSS

5.3

Medium

EPSS

0.5%

p38

KEV

—

Exploit Today

0-100

Published: Jul 8, 2026 · Last modified: Jul 14, 2026 · CWE-125

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-07-092026-07-17

Technical description

U-Boot through 2026.04-rc3 contains an out-of-bounds read vulnerability in tcp_rx_state_machine() (net/tcp.c) when CONFIG_PROT_TCP is enabled, allowing remote attackers to read beyond TCP segment boundaries by crafting a malicious packet with a mismatched IP total length and TCP data offset field. Attackers can send a packet with an IP total length of 40 bytes and a TCP data offset claiming 60 bytes of header to cause tcp_parse_options() to read 40 bytes past the end of the TCP segment, potentially corrupting connection state variables such as rmt_win_scale and rmt_timestamp to disrupt TCP window calculations.

Official references

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