{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-101887",
        "tracking": {
            "current_release_date": "2026-10-03T00:17:46.917392Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-101887",
            "initial_release_date": "2026-10-01T03:26:13.025603Z",
            "revision_history": [
                {
                    "date": "2026-10-01T03:26:13.025603Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-10-01T03:26:15.280089Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-10-01T03:38:29.835180Z",
                    "number": "3",
                    "summary": "CVSS created.| CWES created (1).| Products created (1).| References created (2).| Description created for source.| Unknown change."
                },
                {
                    "date": "2026-10-01T03:38:31.426097Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-10-01T07:35:38.311677Z",
                    "number": "5",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-10-01T13:16:32.152324Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products created (1)."
                },
                {
                    "date": "2026-10-02T15:15:45.618054Z",
                    "number": "7",
                    "summary": "EPSS created.| Unknown change."
                },
                {
                    "date": "2026-10-02T15:15:48.554758Z",
                    "number": "8",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-10-03T00:02:41.815220Z",
                    "number": "9",
                    "summary": "Unknown change."
                }
            ],
            "status": "interim",
            "version": "9"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:git/<1a84465dd860d1be9dcf62339c6273e9e0632dd2",
                                "product": {
                                    "name": "vers:git/<1a84465dd860d1be9dcf62339c6273e9e0632dd2",
                                    "product_id": "CSAFPID-9494978"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "bluez-alsa"
                    }
                ],
                "category": "vendor",
                "name": "arkq"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "branches": [
                                    {
                                        "category": "product_version_range",
                                        "name": "vers:deb/unknown",
                                        "product": {
                                            "name": "vers:deb/unknown",
                                            "product_id": "CSAFPID-9498152"
                                        }
                                    }
                                ],
                                "category": "product_name",
                                "name": "bluez-alsa"
                            }
                        ],
                        "category": "product_family",
                        "name": "bookworm"
                    }
                ],
                "category": "vendor",
                "name": "debian"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-101887",
            "cwe": {
                "id": "CWE-369",
                "name": "Divide By Zero"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "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.",
                    "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-101887"
                },
                {
                    "category": "description",
                    "text": "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.",
                    "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-101887"
                },
                {
                    "category": "description",
                    "text": "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.",
                    "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-101887"
                },
                {
                    "category": "other",
                    "text": "0.00152",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "2.1",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.1",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is cwe data available from source Nvd, The value of the most recent EPSS score",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-9494978",
                    "CSAFPID-9498152"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-101887"
                },
                {
                    "category": "external",
                    "summary": "Source - ncscclear",
                    "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-101887"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101887"
                },
                {
                    "category": "external",
                    "summary": "Source - debian",
                    "url": "https://security-tracker.debian.org/tracker/CVE-2026-101887"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://github.com/arkq/bluez-alsa/commit/1a84465dd860d1be9dcf62339c6273e9e0632dd2"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://www.vulncheck.com/advisories/bluealsa-bluealsad-lc3plus-decoder-division-by-zero-dos"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
                        "baseScore": 3.5,
                        "baseSeverity": "LOW"
                    },
                    "products": [
                        "CSAFPID-9494978",
                        "CSAFPID-9498152"
                    ]
                }
            ],
            "title": "CVE-2026-101887"
        }
    ]
}