DEBIAN-CVE-2026-95520
A heap-based buffer overflow flaw was found in rpm. Parsing a symlink entry in an untrusted RPM package whose declared RPMTAG_LONGFILESIZES value is 0xFFFFFFFFFFFFFFFF causes an integer overflow in iterReadArchiveNext() that shrinks a buffer allocation to one byte, after which the payload's independently-controlled cpio filesize field is used to write attacker-controlled data past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.
DEBIAN-CVE-2026-95520
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-2026-95520
rpm
Source reference: /affected/0/package/name
- Affected versions
- 4.18.0+dfsg-1
Source reference:
/affected/0/versions4.18.0+dfsg-1+deb12u1Source reference:
/affected/0/versions4.18.2+dfsg-1Source reference:
/affected/0/versions4.18.2+dfsg-1.1~exp1Source reference:
/affected/0/versions4.18.2+dfsg-2Source reference:
/affected/0/versions4.18.2+dfsg-2.1Source reference:
/affected/0/versions4.18.2+dfsg-2.1~exp1Source reference:
/affected/0/versions4.19.1.1+dfsg-1Source reference:
/affected/0/versions4.19.1.1+dfsg-1~expSource reference:
/affected/0/versions4.20.0+dfsg-1Source reference:
/affected/0/versions4.20.0+dfsg-2Source reference:
/affected/0/versions4.20.0+dfsg-3Source reference:
/affected/0/versions4.20.0+dfsg-4Source reference:
/affected/0/versions4.20.1+dfsg-1Source reference:
/affected/0/versions4.20.1+dfsg-2Source reference:
/affected/0/versions4.20.1+dfsg-3Source reference:
/affected/0/versions6.0.0-1Source reference:
/affected/0/versions6.0.0-2Source reference:
/affected/0/versions6.0.1-1Source reference:
/affected/0/versions6.1.0-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rpm
Source reference: /affected/1/package/name
- Affected versions
- 4.20.1+dfsg-3
Source reference:
/affected/1/versions6.0.0-1Source reference:
/affected/1/versions6.0.0-2Source reference:
/affected/1/versions6.0.1-1Source reference:
/affected/1/versions6.1.0-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
rpm
Source reference: /affected/2/package/name
- Affected versions
- 4.20.1+dfsg-3
Source reference:
/affected/2/versions6.0.0-1Source reference:
/affected/2/versions6.0.0-2Source reference:
/affected/2/versions6.0.1-1Source reference:
/affected/2/versions6.1.0-1Source 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": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"4.18.0+dfsg-1",
"4.18.0+dfsg-1+deb12u1",
"4.18.2+dfsg-1",
"4.18.2+dfsg-1.1~exp1",
"4.18.2+dfsg-2",
"4.18.2+dfsg-2.1",
"4.18.2+dfsg-2.1~exp1",
"4.19.1.1+dfsg-1",
"4.19.1.1+dfsg-1~exp",
"4.20.0+dfsg-1",
"4.20.0+dfsg-2",
"4.20.0+dfsg-3",
"4.20.0+dfsg-4",
"4.20.1+dfsg-1",
"4.20.1+dfsg-2",
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95520.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95520.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "rpm",
"purl": "pkg:deb/debian/rpm?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"4.20.1+dfsg-3",
"6.0.0-1",
"6.0.0-2",
"6.0.1-1",
"6.1.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95520.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #36980 · Revision 1
- Added to Heist Feed
- Publisher date