DEBIAN-CVE-2026-1757
A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.
DEBIAN-CVE-2026-1757
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-2026-1757
libxml2
Source reference: /affected/0/package/name
- Affected versions
- 2.9.14+dfsg-1.2
Source reference:
/affected/0/versions2.9.14+dfsg-1.3~deb12u1Source reference:
/affected/0/versions2.9.14+dfsg-1.3~deb12u2Source reference:
/affected/0/versions2.9.14+dfsg-1.3~deb12u3Source reference:
/affected/0/versions2.9.14+dfsg-1.3~deb12u4Source reference:
/affected/0/versions2.9.14+dfsg-1.3~deb12u5Source reference:
/affected/0/versions - Fixed versions
- 2.9.14+dfsg-1.3~deb12u6
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libxml2
Source reference: /affected/1/package/name
- Affected versions
- 2.12.7+dfsg+really2.9.14-2.1
Source reference:
/affected/1/versions2.12.7+dfsg+really2.9.14-2.1+deb13u1Source reference:
/affected/1/versions2.12.7+dfsg+really2.9.14-2.1+deb13u2Source reference:
/affected/1/versions - Fixed versions
- 2.12.7+dfsg+really2.9.14-2.1+deb13u3
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
libxml2
Source reference: /affected/2/package/name
- Affected versions
- 2.12.7+dfsg+really2.9.14-2.1
Source reference:
/affected/2/versions2.13.1+dfsg-0exp1Source reference:
/affected/2/versions2.13.3+dfsg-0exp1Source reference:
/affected/2/versions2.13.3+dfsg-0exp2Source reference:
/affected/2/versions2.14.1+dfsg-0exp1Source reference:
/affected/2/versions2.14.2+dfsg-0exp1Source reference:
/affected/2/versions2.14.3+dfsg-0exp1Source reference:
/affected/2/versions2.14.3+dfsg-0exp2Source reference:
/affected/2/versions2.14.3+dfsg-0exp3Source reference:
/affected/2/versions2.14.4+dfsg-0exp1Source reference:
/affected/2/versions2.14.5+dfsg-0.1Source reference:
/affected/2/versions2.14.5+dfsg-0.2Source reference:
/affected/2/versions2.14.5+dfsg-0exp1Source reference:
/affected/2/versions2.14.5+dfsg-0exp2Source reference:
/affected/2/versions2.14.6+dfsg-0.1Source reference:
/affected/2/versions2.15.0+dfsg-0.1Source reference:
/affected/2/versions2.15.0+dfsg-0.2Source reference:
/affected/2/versions2.15.0+dfsg-0.3Source reference:
/affected/2/versions2.15.1+dfsg-0.1Source reference:
/affected/2/versions2.15.1+dfsg-0.2Source reference:
/affected/2/versions2.15.1+dfsg-0.3Source reference:
/affected/2/versions2.15.1+dfsg-0.4Source reference:
/affected/2/versions2.15.1+dfsg-0.5Source reference:
/affected/2/versions2.15.1+dfsg-1Source reference:
/affected/2/versions2.15.1+dfsg-2Source reference:
/affected/2/versions - Fixed versions
- 2.15.2+dfsg-0.1
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": "2.9.14+dfsg-1.3~deb12u6"
}
]
}
],
"package": {
"name": "libxml2",
"purl": "pkg:deb/debian/libxml2?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.9.14+dfsg-1.2",
"2.9.14+dfsg-1.3~deb12u1",
"2.9.14+dfsg-1.3~deb12u2",
"2.9.14+dfsg-1.3~deb12u3",
"2.9.14+dfsg-1.3~deb12u4",
"2.9.14+dfsg-1.3~deb12u5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1757.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.12.7+dfsg+really2.9.14-2.1+deb13u3"
}
]
}
],
"package": {
"name": "libxml2",
"purl": "pkg:deb/debian/libxml2?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.12.7+dfsg+really2.9.14-2.1",
"2.12.7+dfsg+really2.9.14-2.1+deb13u1",
"2.12.7+dfsg+really2.9.14-2.1+deb13u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1757.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.15.2+dfsg-0.1"
}
]
}
],
"package": {
"name": "libxml2",
"purl": "pkg:deb/debian/libxml2?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.12.7+dfsg+really2.9.14-2.1",
"2.13.1+dfsg-0exp1",
"2.13.3+dfsg-0exp1",
"2.13.3+dfsg-0exp2",
"2.14.1+dfsg-0exp1",
"2.14.2+dfsg-0exp1",
"2.14.3+dfsg-0exp1",
"2.14.3+dfsg-0exp2",
"2.14.3+dfsg-0exp3",
"2.14.4+dfsg-0exp1",
"2.14.5+dfsg-0.1",
"2.14.5+dfsg-0.2",
"2.14.5+dfsg-0exp1",
"2.14.5+dfsg-0exp2",
"2.14.6+dfsg-0.1",
"2.15.0+dfsg-0.1",
"2.15.0+dfsg-0.2",
"2.15.0+dfsg-0.3",
"2.15.1+dfsg-0.1",
"2.15.1+dfsg-0.2",
"2.15.1+dfsg-0.3",
"2.15.1+dfsg-0.4",
"2.15.1+dfsg-0.5",
"2.15.1+dfsg-1",
"2.15.1+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-1757.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56156 · Revision 1
- Added to Heist Feed
- Publisher date