UnratedFix available

DEBIAN-CVE-2026-25068

Type: advisorySource: OSV1 source record

alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder. The tplg_decode_control_mixer1() function reads the num_channels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array (SND_TPLG_MAX_CHAN). A crafted topology file with an excessive num_channels value can cause out-of-bounds heap writes, leading to a crash.

Announced 29 Jan 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-25068

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-2026-25068

alsa-lib

Source reference: /affected/0/package/name

Affected versions: 1.2.10-1
Source reference: /affected/0/versions
1.2.10-2
Source reference: /affected/0/versions
1.2.10-3
Source reference: /affected/0/versions
1.2.10-3.1
Source reference: /affected/0/versions
1.2.10-3.1~exp1
Source reference: /affected/0/versions
1.2.10-3.1~exp2
Source reference: /affected/0/versions
1.2.10-3.2
Source reference: /affected/0/versions
1.2.11-1
Source reference: /affected/0/versions
1.2.12-1
Source reference: /affected/0/versions
1.2.13-1
Source reference: /affected/0/versions
1.2.14-1
Source reference: /affected/0/versions
1.2.14-2
Source reference: /affected/0/versions
1.2.15-1
Source reference: /affected/0/versions
1.2.15-2
Source reference: /affected/0/versions
1.2.15.1-1
Source reference: /affected/0/versions
1.2.15.3-1
Source reference: /affected/0/versions
1.2.16-1
Source reference: /affected/0/versions
1.2.16.1-1
Source reference: /affected/0/versions
1.2.16.1-1~bpo13+1
Source reference: /affected/0/versions
1.2.16.1-2
Source reference: /affected/0/versions
1.2.8-1
Source reference: /affected/0/versions
1.2.9-1
Source reference: /affected/0/versions
1.2.9-2
Source 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/versions
Fixed versions: 1.2.14-1+deb13u1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

alsa-lib

Source reference: /affected/2/package/name

Affected versions: 1.2.14-1
Source reference: /affected/2/versions
1.2.14-2
Source reference: /affected/2/versions
1.2.15-1
Source reference: /affected/2/versions
1.2.15-2
Source reference: /affected/2/versions
1.2.15.1-1
Source reference: /affected/2/versions
1.2.15.3-1
Source reference: /affected/2/versions
Fixed versions: 1.2.16-1
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-2026-25068.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.2.14-1+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "alsa-lib",
      "purl": "pkg:deb/debian/alsa-lib?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.2.14-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25068.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.2.16-1"
          }
        ]
      }
    ],
    "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"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25068.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56250 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:31:48 GMT
Publisher date: Thu, 29 Jan 2026 20:16:10 GMT

Read the original announcement