High
U-Boot before 2026.10-rc3 Out-of-Bounds Write in IP Fragment Reassembly
U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netboot to corrupt adjacent memory and crash the bootloader.
Announced Source revision 1
Original source ↗CVE-2026-71971
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-2026-71971
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-rc3",
"versionType": "custom"
}
],
"packageURL": "pkg:github/u-boot/u-boot",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-71971
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4396 · Revision 1
- Added to Heist Feed
- Publisher date