DEBIAN-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 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.
DEBIAN-CVE-2026-29007
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-29007
u-boot
Source reference: /affected/0/package/name
- Affected versions
- 2023.01+dfsg-2
Source reference:
/affected/0/versions2023.01+dfsg-2+deb12u1Source reference:
/affected/0/versions2023.01+dfsg-2+deb12u2Source reference:
/affected/0/versions2023.01+dfsg-2+deb12u3Source reference:
/affected/0/versions2023.04+dfsg-1Source reference:
/affected/0/versions2023.04~rc2+dfsg-1Source reference:
/affected/0/versions2023.04~rc5+dfsg-1Source reference:
/affected/0/versions2023.07+dfsg-1Source reference:
/affected/0/versions2023.07~rc4+dfsg-1Source reference:
/affected/0/versions2023.07~rc5+dfsg-1Source reference:
/affected/0/versions2024.01+dfsg-1Source reference:
/affected/0/versions2024.01+dfsg-2Source reference:
/affected/0/versions2024.01+dfsg-3Source reference:
/affected/0/versions2024.01+dfsg-4Source reference:
/affected/0/versions2024.01+dfsg-5Source reference:
/affected/0/versions2024.01+dfsg-6Source reference:
/affected/0/versions2024.01+dfsg-7Source reference:
/affected/0/versions2024.01~rc6+dfsg-1Source reference:
/affected/0/versions2024.01~rc6+dfsg-2Source reference:
/affected/0/versions2025.01-1Source reference:
/affected/0/versions2025.01-2Source reference:
/affected/0/versions2025.01-3Source reference:
/affected/0/versions2025.01-3.1Source reference:
/affected/0/versions2025.01-3.2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
u-boot
Source reference: /affected/1/package/name
- Affected versions
- 2025.01-3
Source reference:
/affected/1/versions2025.01-3+deb13u1Source reference:
/affected/1/versions2025.01-3.1Source reference:
/affected/1/versions2025.01-3.2Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
u-boot
Source reference: /affected/2/package/name
- Affected versions
- 2025.01-3
Source reference:
/affected/2/versions2025.01-3.1Source reference:
/affected/2/versions2025.01-3.2Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/debian/u-boot?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2023.01+dfsg-2",
"2023.01+dfsg-2+deb12u1",
"2023.01+dfsg-2+deb12u2",
"2023.01+dfsg-2+deb12u3",
"2023.04+dfsg-1",
"2023.04~rc2+dfsg-1",
"2023.04~rc5+dfsg-1",
"2023.07+dfsg-1",
"2023.07~rc4+dfsg-1",
"2023.07~rc5+dfsg-1",
"2024.01+dfsg-1",
"2024.01+dfsg-2",
"2024.01+dfsg-3",
"2024.01+dfsg-4",
"2024.01+dfsg-5",
"2024.01+dfsg-6",
"2024.01+dfsg-7",
"2024.01~rc6+dfsg-1",
"2024.01~rc6+dfsg-2",
"2025.01-1",
"2025.01-2",
"2025.01-3",
"2025.01-3.1",
"2025.01-3.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29007.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/debian/u-boot?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2025.01-3",
"2025.01-3+deb13u1",
"2025.01-3.1",
"2025.01-3.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29007.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "u-boot",
"purl": "pkg:deb/debian/u-boot?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2025.01-3",
"2025.01-3.1",
"2025.01-3.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-29007.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55917 · Revision 1
- Added to Heist Feed
- Publisher date