CVE-2026-29007

Katalog CVE

CVSS 5.3 · Medium EPSS 0,67%

Kerentanan Out-of-bounds Read pada denx u-boot. Skor CVSS 3.1 5.3 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

8 Juli 2026

Terakhir diubah

22 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.3 (Medium), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,67% peluang dieksploitasi; lebih tinggi dari 50,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://lists.denx.de/pipermail/u-boot/2026-May/617853.html mailing list · advisory pihak ketiga
• https://www.vulncheck.com/advisories/u-boot-rc3-out-of-bounds-read-in-tcp-rx-state-machine-via-tcp-c advisory pihak ketiga · exploit
• https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/ advisory pihak ketiga · exploit
• https://u-boot.org/ product