DEBIAN-CVE-2026-22693
HarfBuzz is a text shaping engine. Prior to version 12.3.0, a null pointer dereference vulnerability exists in the SubtableUnicodesCache::create function located in src/hb-ot-cmap-table.hh. The function fails to check if hb_malloc returns NULL before using placement new to construct an object at the returned pointer address. When hb_malloc fails to allocate memory (which can occur in low-memory conditions or when using custom allocators that simulate allocation failures), it returns NULL. The code then attempts to call the constructor on this null pointer using placement new syntax, resulting in undefined behavior and a Segmentation Fault. This issue has been patched in version 12.3.0.
DEBIAN-CVE-2026-22693
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-2026-22693
harfbuzz
Source reference: /affected/0/package/name
- Affected versions
- 10.0.1-1
Source reference:
/affected/0/versions10.1.0-1Source reference:
/affected/0/versions10.1.0-2Source reference:
/affected/0/versions10.2.0-1Source reference:
/affected/0/versions10.2.0-2Source reference:
/affected/0/versions11.4.5-1Source reference:
/affected/0/versions11.5.0-1Source reference:
/affected/0/versions12.1.0-1Source reference:
/affected/0/versions12.2.0-1Source reference:
/affected/0/versions12.3.0-1Source reference:
/affected/0/versions12.3.0-2Source reference:
/affected/0/versions12.3.0-3Source reference:
/affected/0/versions12.3.0-4Source reference:
/affected/0/versions12.3.1-1Source reference:
/affected/0/versions12.3.2-1Source reference:
/affected/0/versions12.3.2-2Source reference:
/affected/0/versions6.0.0+dfsg-3Source reference:
/affected/0/versions8.0.0-1Source reference:
/affected/0/versions8.0.0-2Source reference:
/affected/0/versions8.0.0-3Source reference:
/affected/0/versions8.0.1-1Source reference:
/affected/0/versions8.3.0-1Source reference:
/affected/0/versions8.3.0-2Source reference:
/affected/0/versions9.0.0-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
harfbuzz
Source reference: /affected/1/package/name
- Affected versions
- 10.2.0-1
Source reference:
/affected/1/versions - Fixed versions
- 10.2.0-1+deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
harfbuzz
Source reference: /affected/2/package/name
- Affected versions
- 10.2.0-1
Source reference:
/affected/2/versions10.2.0-2Source reference:
/affected/2/versions11.4.5-1Source reference:
/affected/2/versions11.5.0-1Source reference:
/affected/2/versions12.1.0-1Source reference:
/affected/2/versions12.2.0-1Source reference:
/affected/2/versions12.3.0-1Source reference:
/affected/2/versions12.3.0-2Source reference:
/affected/2/versions12.3.0-3Source reference:
/affected/2/versions - Fixed versions
- 12.3.0-4
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"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"10.0.1-1",
"10.1.0-1",
"10.1.0-2",
"10.2.0-1",
"10.2.0-2",
"11.4.5-1",
"11.5.0-1",
"12.1.0-1",
"12.2.0-1",
"12.3.0-1",
"12.3.0-2",
"12.3.0-3",
"12.3.0-4",
"12.3.1-1",
"12.3.2-1",
"12.3.2-2",
"6.0.0+dfsg-3",
"8.0.0-1",
"8.0.0-2",
"8.0.0-3",
"8.0.1-1",
"8.3.0-1",
"8.3.0-2",
"9.0.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22693.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "10.2.0-1+deb13u1"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"10.2.0-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22693.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "12.3.0-4"
}
]
}
],
"package": {
"name": "harfbuzz",
"purl": "pkg:deb/debian/harfbuzz?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"10.2.0-1",
"10.2.0-2",
"11.4.5-1",
"11.5.0-1",
"12.1.0-1",
"12.2.0-1",
"12.3.0-1",
"12.3.0-2",
"12.3.0-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-22693.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55576 · Revision 1
- Added to Heist Feed
- Publisher date