CVE-2026-29009
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in ...
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD.
Beschreibung
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.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 11 | u-boot | kein Fix angegeben |
| debian 12 | u-boot | kein Fix angegeben |
| debian 13 | u-boot | kein Fix angegeben |
| debian 14 | u-boot | kein Fix angegeben |
| echo | u-boot | kein Fix angegeben |
| 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 | kein Fix angegeben |
| rapidfort debian 13 | u-boot | kein Fix angegeben |
Referenzen
- 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/