CVE-2026-29009
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in ...
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD.
Descripción
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by returning multiple relative symlink targets that are appended without cumulative length validation. Attackers can send two or more READLINK responses containing relative symlink targets of approximately 1100 bytes each to corrupt adjacent BSS variables including nfs_server_ip, nfs_server_mount_port, nfs_server_port, nfs_our_port, nfs_state, and rpc_id, potentially achieving memory corruption and control over the NFS client state machine.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| debian 11 | u-boot | sin corrección indicada |
| debian 12 | u-boot | sin corrección indicada |
| debian 13 | u-boot | sin corrección indicada |
| debian 14 | u-boot | sin corrección indicada |
| echo | u-boot | sin corrección indicada |
| rapidfort alpine 3.20 | u-boot | 2026.07-r0 |
| rapidfort alpine 3.21 | u-boot | 2026.07-r0 |
| rapidfort alpine 3.22 | u-boot | 2026.07-r0 |
| rapidfort alpine 3.23 | u-boot | 2026.07-r0 |
| rapidfort alpine 3.24 | u-boot | 2026.07-r0 |
| rapidfort debian 12 | u-boot | sin corrección indicada |
| rapidfort debian 13 | u-boot | sin corrección indicada |
Referencias
- https://git.u-boot-project.org/u-boot/u-boot/-/commit/d6694018eaddefac6aae974f9cec72fd6e58f1bc
- https://git.u-boot-project.org/u-boot/u-boot/-/releases/v2026.07-rc2
- https://lists.denx.de/pipermail/u-boot/2026-May/617853.html
- https://u-boot.org/
- https://www.vulncheck.com/advisories/u-boot-rc3-buffer-overflow-in-nfs-readlink-reply-via-nfs-readlink
- https://y637f9qq2x.com/posts/u-boot-tcp-nfs-vulns/