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DEBIAN-CVE-2026-101887

Type: advisorySource: OSV1 source record

BlueALSA (bluez-alsa/bluealsad) contains a division-by-zero vulnerability in the LC3plus sink decoder (a2dp-lc3plus.c, a2dp_lc3plus_dec_thread) that allows a Bluetooth-adjacent attacker to crash the daemon by sending a crafted RTP media header with an attacker-controlled frame count field set to zero. Attackers can establish an A2DP source connection with an LC3plus session negotiated against a victim running bluealsad as an A2DP sink and transmit a non-fragmented LC3plus media header with a zero frame count to trigger a SIGFPE in the decoding thread, causing a denial of service on builds compiled with LC3plus support enabled.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-101887

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-2026-101887

bluez-alsa

Source reference: /affected/0/package/name

Affected versions
4.0.0-2

Source reference: /affected/0/versions

4.1.1-1

Source reference: /affected/0/versions

4.1.1-2

Source reference: /affected/0/versions

4.2.0-1

Source reference: /affected/0/versions

4.3.1-1

Source reference: /affected/0/versions

4.3.1-2

Source reference: /affected/0/versions

4.3.1-3

Source reference: /affected/0/versions

4.3.1-3.1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

bluez-alsa

Source reference: /affected/1/package/name

Affected versions
4.3.1-3

Source reference: /affected/1/versions

4.3.1-3.1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

bluez-alsa

Source reference: /affected/2/package/name

Affected versions
4.3.1-3

Source reference: /affected/2/versions

4.3.1-3.1

Source 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": "bluez-alsa",
      "purl": "pkg:deb/debian/bluez-alsa?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "4.0.0-2",
      "4.1.1-1",
      "4.1.1-2",
      "4.2.0-1",
      "4.3.1-1",
      "4.3.1-2",
      "4.3.1-3",
      "4.3.1-3.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101887.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "bluez-alsa",
      "purl": "pkg:deb/debian/bluez-alsa?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.3.1-3",
      "4.3.1-3.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101887.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "bluez-alsa",
      "purl": "pkg:deb/debian/bluez-alsa?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "4.3.1-3",
      "4.3.1-3.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101887.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  }
]
Related CVEs
CVE-2026-101887

Source reference: /upstream

Publisher severity

low

Source reference: /severity/0/score

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-101887 · Low

bluez-alsa

Event
#72968 · Revision 1
Added to Heist Feed
Publisher date
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