| Name | CVE-2026-49760 |
| Description | Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows Stack-based Buffer Overflow. This vulnerability is associated with program file lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term. The C function ei_s_print_term uses an internal 2000-character stack buffer to format terms. When called with an encoded Erlang term containing a very large integer (encoded representation exceeding 2000 characters), the buffer overflows. The overflow bytes are restricted to the ASCII values of 0-9 and A-F, which limits exploitation to Denial of Service. The companion function ei_print_term, which prints directly to a FILE instead of a memory buffer, does not contain this bug. This issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to erl_interface from 3.7.16 before 5.5.2.1, 5.7.0.1, and 5.8.1. Whether OTP before OTP 17.0, corresponding to erl_interface before 3.7.16, is affected is unknown. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6464-1 |
| Debian Bugs | 1139727 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| erlang (PTS) | bookworm | 1:25.2.3+dfsg-1+deb12u4 | vulnerable |
| bookworm (security) | 1:25.2.3+dfsg-1+deb12u1 | vulnerable | |
| trixie | 1:27.3.4.1+dfsg-1+deb13u3 | fixed | |
| trixie (security) | 1:27.3.4.1+dfsg-1+deb13u4 | fixed | |
| forky | 1:29.1.1+dfsg-1 | fixed | |
| sid | 1:29.1.2+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| erlang | source | trixie | 1:27.3.4.1+dfsg-1+deb13u3 | DSA-6464-1 | ||
| erlang | source | (unstable) | 1:29.0.2+dfsg-1 | 1139727 |
https://osv.dev/vulnerability/EEF-CVE-2026-49760
https://cna.erlef.org/cves/CVE-2026-49760.html
Fixed by: https://github.com/erlang/otp/commit/0bef277b2d39dc8babb9ceb4f5d0a456f3007111 (OTP-29.0.2, OTP-28.5.0.2, OTP-27.3.4.13)