CVE detail
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 13.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
4 source links · newest first
- https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/y637f9qq2x.com
No excerpt available.
referencey637f9qq2x.comJul 8, 2026, 5:17 PM - https://www.vulncheck.com/advisories/u-boot-rc3-out-of-bounds-read-in-tcp-rx-state-machine-via-tcp-cwww.vulncheck.com
No excerpt available.
Exploitwww.vulncheck.comJul 8, 2026, 5:17 PM - https://u-boot.org/u-boot.org
No excerpt available.
referenceu-boot.orgJul 8, 2026, 5:17 PM No excerpt available.
referencelists.denx.deJul 8, 2026, 5:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2019-14197CVSS 9.1 · Critical
An issue was discovered in Das U-Boot through 2019.07. There is a read of out-of-bounds data at nfs_read_reply.
- CVE-2026-49282CVSS 5.1 · Medium
Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected archit…
- CVE-2026-18020CVSS 5.3 · Medium
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an off-by-one error in bounds checking.
- CVE-2026-17649CVSS 5.3 · Medium
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.
- CVE-2026-17226CVSS 5.4 · Medium
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to obtain sensitive information or cause a denial of service due to an out-of-bounds read.
- CVE-2026-17212CVSS 5.3 · Medium
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an out-of-bounds read.