DEBIAN-CVE-2026-6507
A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).
DEBIAN-CVE-2026-6507
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: osv:DEBIAN-CVE-2026-6507
dnsmasq
Source reference: /affected/0/package/name
- Affected versions
- 2.91-1
Source reference:
/affected/0/versions2.92-1Source reference:
/affected/0/versions2.92-1+exp1Source reference:
/affected/0/versions2.92-1~exp1Source reference:
/affected/0/versions2.92-2Source reference:
/affected/0/versions2.92-3Source reference:
/affected/0/versions2.92~rc1-1Source reference:
/affected/0/versions2.92~rc3-1Source reference:
/affected/0/versions - Fixed versions
- 2.92-4
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.92-4"
}
]
}
],
"package": {
"name": "dnsmasq",
"purl": "pkg:deb/debian/dnsmasq?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.91-1",
"2.92-1",
"2.92-1+exp1",
"2.92-1~exp1",
"2.92-2",
"2.92-3",
"2.92~rc1-1",
"2.92~rc3-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6507.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58256 · Revision 1
- Added to Heist Feed
- Publisher date