UBUNTU-CVE-2026-101887

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Source
https://ubuntu.com/security/CVE-2026-101887
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101887.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-101887
Upstream
Published
2026-10-02T00:00:00Z
Modified
2026-10-02T22:30:12Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:22.04:LTS / bluez-alsa

Package

Name
bluez-alsa
Purl
pkg:deb/ubuntu/bluez-alsa?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.0-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bluez-alsa-utils",
            "binary_version":  "3.0.0-2"
        },
        {
            "binary_name":  "libasound2-plugin-bluez",
            "binary_version":  "3.0.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101887.json"

Ubuntu:24.04:LTS / bluez-alsa

Package

Name
bluez-alsa
Purl
pkg:deb/ubuntu/bluez-alsa?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.0.0-2
4.1.1-1
4.1.1-1build1
4.1.1-1build2
4.1.1-1build3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bluez-alsa-utils",
            "binary_version":  "4.1.1-1build3"
        },
        {
            "binary_name":  "libasound2-plugin-bluez",
            "binary_version":  "4.1.1-1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101887.json"

Ubuntu:26.04:LTS / bluez-alsa

Package

Name
bluez-alsa
Purl
pkg:deb/ubuntu/bluez-alsa?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.3.1-3
4.3.1-3.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bluez-alsa-utils",
            "binary_version":  "4.3.1-3.1"
        },
        {
            "binary_name":  "libasound2-plugin-bluez",
            "binary_version":  "4.3.1-3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101887.json"