PJSIP: Stack buffer overflow in pjsip_auth_create_digest2()
Summary
PJSIP: Stack buffer overflow in pjsip_auth_create_digest2()
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, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.
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-2026-40892 pjproject Fixed in: 2.17-r0
- Debian DEBIAN-CVE-2026-40892 asterisk
- Ubuntu UBUNTU-CVE-2026-40892 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com