CVE-2026-40614 (GCVE-0-2026-40614)
Vulnerability from cvelistv5
Published
2026-04-21 18:04
Modified
2026-04-22 13:33
CWE
  • CWE-122 - Heap-based Buffer Overflow
Summary
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.
Impacted products
Vendor Product Version
pjsip pjproject Version: <= 2.16
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Show details on NVD website


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                "id": "CVE-2026-40614",
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            "attackRequirements": "NONE",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "vectorString": "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",
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      "references": [
        {
          "name": "https://github.com/pjsip/pjproject/security/advisories/GHSA-j59p-4xrr-fp8g",
          "tags": [
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          "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-j59p-4xrr-fp8g"
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    "dateReserved": "2026-04-14T14:07:59.642Z",
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    "state": "PUBLISHED"
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