DEBIAN-CVE-2026-56789
RTKLIB through 2.4.3 contains a heap buffer overflow vulnerability in the readrnxobsb function in src/rinex.c that allows attackers to trigger memory corruption by failing to clamp satellite count values from RINEX epoch headers. Attackers can craft malicious RINEX files declaring more than 64 satellites per epoch to cause heap buffer overflow writes and out-of-bounds stack reads, crashing RTKLIB-based applications including rnx2rtkp and RTKPOST.
DEBIAN-CVE-2026-56789
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-2026-56789
rtklib
Source reference: /affected/0/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rtklib
Source reference: /affected/1/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rtklib
Source reference: /affected/2/package/name
- Affected versions
- 2.4.3.b34+dfsg-1
Source reference:
/affected/2/versions - 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.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56789.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56789.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rtklib",
"purl": "pkg:deb/debian/rtklib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.4.3.b34+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56789.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57395 · Revision 1
- Added to Heist Feed
- Publisher date