CVE-2026-74220
HIGH
NVD
CVSS Score
8.2
Severity
HIGH
Published
Sep 29, 2026
Vendor
unknown
Description
U-Boot before 2026.10-rc5 contains a buffer overflow in nfs_read_reply() function in net/nfs-common.c that allows attackers to corrupt memory by supplying crafted NFS READ reply lengths. A malicious NFS server can exploit signed integer handling to bypass length validation and write far past the destination buffer, crashing the bootloader or corrupting memory.