lwIP through 2.2.1 Stack Out-of-Bounds Write via mDNS Search Response Handler
lwIP through 2.2.1 contains a stack out-of-bounds write vulnerability in mdns_handle_response that allows adjacent attackers to corrupt stack memory by sending mDNS responses with invalid domain names. Attackers on the local link can send multicast PTR answers with oversized RDLENGTH or SRV answers with RDLENGTH below 6 during a service search, overflowing a 256-byte stack buffer and crashing the device.
CVE-2026-112062
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-2026-112062
lwIP
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://git.savannah.nongnu.org/git/lwip.git",
"vendor": "lwIP",
"product": "lwIP",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "2.2.1"
}
],
"collectionURL": "https://savannah.nongnu.org/projects/lwip/",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-112062
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #39108 · Revision 1
- Added to Heist Feed
- Publisher date