CVE-2026-29007

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-29007
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29007.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-29007
Downstream
Published
2026-07-08T16:11:25Z
Modified
2026-08-12T03:51:44Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
U-Boot 2026.04-rc3 Out-of-Bounds Read in tcp_rx_state_machine via tcp.c
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29007.json"
}
References

Affected packages

Git / github.com/u-boot/u-boot

Affected ranges

Type
GIT
Repo
https://github.com/u-boot/u-boot
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
88dc2788777babfd6322fa655df549a019aa1e69
Introduced
aa4f687977a449686498236722ee5e93d8b39918
Last Affected
4f70106beafe30df8b0528a3d8b2543cd48fe241
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:denx:u-boot:2026.04:rc1:*:*:*:*:*:*",
        "cpe:2.3:a:denx:u-boot:2026.04:rc2:*:*:*:*:*:*",
        "cpe:2.3:a:denx:u-boot:2026.04:rc3:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2026.04"
        },
        {
            "introduced": "2026.04-rc1"
        },
        {
            "last_affected": "2026.04-rc1"
        },
        {
            "introduced": "2026.04-rc2"
        },
        {
            "last_affected": "2026.04-rc2"
        },
        {
            "introduced": "2026.04-rc3"
        },
        {
            "last_affected": "2026.04-rc3"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

2026.*
2026.04-rc1
2026.04-rc2
2026.04-rc3
v2026.*
v2026.04-rc1
v2026.04-rc2
v2026.04-rc3
v2026.04-rc4
v2026.04-rc5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29007.json"