DEBIAN-CVE-2026-56109
The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() in src/conf.c that allows attackers to corrupt memory by supplying maliciously crafted ALSA configuration text. When parsing nested compound or array configuration blocks, parse_def() fails to check return values before continuing, causing snd_config_delete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.
DEBIAN-CVE-2026-56109
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-2026-56109
alsa-lib
Source reference: /affected/0/package/name
- Affected versions
- 1.2.10-1
Source reference:
/affected/0/versions1.2.10-2Source reference:
/affected/0/versions1.2.10-3Source reference:
/affected/0/versions1.2.10-3.1Source reference:
/affected/0/versions1.2.10-3.1~exp1Source reference:
/affected/0/versions1.2.10-3.1~exp2Source reference:
/affected/0/versions1.2.10-3.2Source reference:
/affected/0/versions1.2.11-1Source reference:
/affected/0/versions1.2.12-1Source reference:
/affected/0/versions1.2.13-1Source reference:
/affected/0/versions1.2.14-1Source reference:
/affected/0/versions1.2.14-2Source reference:
/affected/0/versions1.2.15-1Source reference:
/affected/0/versions1.2.15-2Source reference:
/affected/0/versions1.2.15.1-1Source reference:
/affected/0/versions1.2.15.3-1Source reference:
/affected/0/versions1.2.16-1Source reference:
/affected/0/versions1.2.16.1-1Source reference:
/affected/0/versions1.2.16.1-1~bpo13+1Source reference:
/affected/0/versions1.2.16.1-2Source reference:
/affected/0/versions1.2.8-1Source reference:
/affected/0/versions1.2.9-1Source reference:
/affected/0/versions1.2.9-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
alsa-lib
Source reference: /affected/1/package/name
- Affected versions
- 1.2.14-1
Source reference:
/affected/1/versions1.2.14-1+deb13u1Source reference:
/affected/1/versions1.2.14-2Source reference:
/affected/1/versions1.2.15-1Source reference:
/affected/1/versions1.2.15-2Source reference:
/affected/1/versions1.2.15.1-1Source reference:
/affected/1/versions1.2.15.3-1Source reference:
/affected/1/versions1.2.16-1Source reference:
/affected/1/versions1.2.16.1-1Source reference:
/affected/1/versions1.2.16.1-1~bpo13+1Source reference:
/affected/1/versions1.2.16.1-2Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
alsa-lib
Source reference: /affected/2/package/name
- Affected versions
- 1.2.14-1
Source reference:
/affected/2/versions1.2.14-2Source reference:
/affected/2/versions1.2.15-1Source reference:
/affected/2/versions1.2.15-2Source reference:
/affected/2/versions1.2.15.1-1Source reference:
/affected/2/versions1.2.15.3-1Source reference:
/affected/2/versions1.2.16-1Source reference:
/affected/2/versions1.2.16.1-1~bpo13+1Source reference:
/affected/2/versions - Fixed versions
- 1.2.16.1-1
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"
}
]
}
],
"package": {
"name": "alsa-lib",
"purl": "pkg:deb/debian/alsa-lib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.2.10-1",
"1.2.10-2",
"1.2.10-3",
"1.2.10-3.1",
"1.2.10-3.1~exp1",
"1.2.10-3.1~exp2",
"1.2.10-3.2",
"1.2.11-1",
"1.2.12-1",
"1.2.13-1",
"1.2.14-1",
"1.2.14-2",
"1.2.15-1",
"1.2.15-2",
"1.2.15.1-1",
"1.2.15.3-1",
"1.2.16-1",
"1.2.16.1-1",
"1.2.16.1-1~bpo13+1",
"1.2.16.1-2",
"1.2.8-1",
"1.2.9-1",
"1.2.9-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56109.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "alsa-lib",
"purl": "pkg:deb/debian/alsa-lib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.2.14-1",
"1.2.14-1+deb13u1",
"1.2.14-2",
"1.2.15-1",
"1.2.15-2",
"1.2.15.1-1",
"1.2.15.3-1",
"1.2.16-1",
"1.2.16.1-1",
"1.2.16.1-1~bpo13+1",
"1.2.16.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56109.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.16.1-1"
}
]
}
],
"package": {
"name": "alsa-lib",
"purl": "pkg:deb/debian/alsa-lib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.2.14-1",
"1.2.14-2",
"1.2.15-1",
"1.2.15-2",
"1.2.15.1-1",
"1.2.15.3-1",
"1.2.16-1",
"1.2.16.1-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56109.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57872 · Revision 1
- Added to Heist Feed
- Publisher date