CVE-2026-29007
published 2026-07-08CVE-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…
PriorityP432medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.55%
42.6th percentile
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.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| denx | u-boot | < 2026.04 | 2026.04 |
| denx | u-boot | — | — |
| denx | u-boot | — | — |
| denx | u-boot | — | — |
| u-boot | u-boot | <= 2026.04-rc3 | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
nvdv4.06.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat5.3MEDIUM
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VulDB
U-Boot up to 2026.04-rc3 TCP State Machine net/tcp.c tcp_parse_options data offset out-of-bounds (Nessus ID 326047)
vuldb·2026-07-12·CVSS 5.3
CVE-2026-29007 [MEDIUM] U-Boot up to 2026.04-rc3 TCP State Machine net/tcp.c tcp_parse_options data offset out-of-bounds (Nessus ID 326047)
A vulnerability labeled as very critical has been found in U-Boot up to 2026.04-rc3. This vulnerability affects the function tcp_parse_options of the file net/tcp.c of the component TCP State Machine. Executing a manipulation of the argument data offset can lead to out-of-bounds read.
This vulnerability appears as CVE-2026-29007. The attack may be performed from remote. There is no available exploit.
GHSA
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 boun
ghsa_unreviewed·2026-07-08
CVE-2026-29007 [MEDIUM] CWE-125 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 boun
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.
Red Hat
U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
vendor_redhat·2026-07-08·CVSS 5.3
CVE-2026-29007 [MEDIUM] CWE-125 U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
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.
A flaw was found in U-Boot. A remote attacker can exploit an out-of-bounds read vulnerability
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-29007 python-buildman: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 python-buildman: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 python-buildman: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 4
Bugzilla
CVE-2026-29007 python-patch-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 python-patch-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 python-patch-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 r
Bugzilla
CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [epel-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [epel-all]
CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 byte
Bugzilla
CVE-2026-29007 python-dtoc: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 python-dtoc: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 python-dtoc: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 by
Bugzilla
CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 uboot-tools: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 by
Bugzilla
CVE-2026-29007 python-u-boot-pylib: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 python-u-boot-pylib: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 python-u-boot-pylib: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 re
Bugzilla
CVE-2026-29007 python-binary-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
bugzilla·2026-07-23·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 python-binary-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
CVE-2026-29007 python-binary-manager: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-29007 U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
bugzilla·2026-07-08·CVSS 5.3
CVE-2026-29007 [MEDIUM] CVE-2026-29007 U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
CVE-2026-29007 U-Boot: U-Boot: Out-of-bounds read leads to denial of service via crafted TCP packets
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.
2026-07-08
Published