PJSIP: Heap buffer overflow in Opus codec decoding_CVE-2026-40614

{
    "lastseen": "",
    "description": "PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, there is a buffer overflow when decoding Opus audio frames due to insufficient buffer size validation in the Opus codec decode path. The FEC decode buffers (dec_frame[].buf) were allocated based on a PCM-derived formula: (sample_rate/1000) * 60 * channel_cnt * 2. At 8 kHz mono this yields only 960 bytes, but codec_parse() can output encoded frames up to MAX_ENCODED_PACKET_SIZE (1280) bytes via opus_repacketizer_out_range(). The three pj_memcpy() calls in codec_decode() copied input->size bytes without bounds checking, causing a heap buffer overflow.",
    "published": "2026-04-21T18:04:15.159Z",
    "modified": "2026-04-21T18:04:15.159Z",
    "type": "cve",
    "title": "PJSIP: Heap buffer overflow in Opus codec decoding",
    "source": "GitHub_M",
    "references": "https://github.com/pjsip/pjproject/security/advisories/GHSA-j59p-4xrr-fp8g\nhttps://github.com/pjsip/pjproject/commit/17897e835818f8ee03b1806ddcd7b95ea16d2c0e",
    "id": "CVE-2026-40614",
    "bulletinFamily": "",
    "cwe": [
        "CWE-122"
    ],
    "cvelist": null,
    "sourceData": "pjsip pjproject <= 2.16",
    "sourceHref": "",
    "cvss": {
        "score": 8.5,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "pjproject",
    "version": "<= 2.16",
    "vendor": "pjsip",
    "ai_description": "Heap buffer overflow in Opus codec decoding due to insufficient buffer size validation",
    "ai_severity": "High",
    "ai_vendor": "pjsip",
    "ai_product": "PJSIP",
    "ai_version": "<= 2.16",
    "ai_score": 8.5
}