High
U-Boot before 2026.10-rc5 Use-After-Free in lwIP wget Receive Callback
U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP input path to access released memory and crash the bootloader.
Announced Group revision 1
Original source ↗CVE-2026-74222
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-2026-74222
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-2026-74222
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #7912 · Revision 1
- Added to Heist Feed
- Publisher date