PJSIP: Heap buffer overflow in Opus codec decoding
Summary
PJSIP: Heap buffer overflow in Opus codec decoding
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-40614 pjproject Fixed in: 2.17-r0
- Debian DEBIAN-CVE-2026-40614 asterisk
- Ubuntu UBUNTU-CVE-2026-40614 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com