U-Boot before 2026.10-rc5 Buffer Overflow via NFS READ Reply
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.
CVE-2026-74220
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74220
u-boot
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/u-boot/u-boot",
"vendor": "u-boot",
"product": "u-boot",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2026.10-rc5",
"versionType": "custom"
}
],
"packageURL": "pkg:github/u-boot/u-boot",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-74220
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4398 · Revision 1
- Added to Heist Feed
- Publisher date