DEBIAN-CVE-2026-22184
zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer.
DEBIAN-CVE-2026-22184
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-2026-22184
zlib
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1:1.2.6.dfsg-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
zlib
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1:1.2.6.dfsg-1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
zlib
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1:1.2.6.dfsg-1
Source reference:
/affected/2/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": "1:1.2.6.dfsg-1"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22184.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.6.dfsg-1"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22184.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.6.dfsg-1"
}
]
}
],
"package": {
"name": "zlib",
"purl": "pkg:deb/debian/zlib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22184.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56667 · Revision 1
- Added to Heist Feed
- Publisher date