{"id":"DEBIAN-CVE-2026-54890","details":"Integer Underflow (Wrap or Wraparound) vulnerability in erlang otp erlang/otp (erts modules), erlang otp erts (erts modules) allows Forced Integer Overflow, Excessive Allocation. This vulnerability is associated with program files erts/emulator/beam/external.c, emulator/beam/external.c.  The BIT_BINARY_EXT tag (77) handler in the External Term Format (ETF) decoder accepts an encoding with both length and trailing-bits fields set to zero. The subsequent computation of the bitstring size underflows an unsigned integer, producing a value of roughly 2^64 that is then passed as a memory allocation size. The allocator aborts the entire node with a message such as \"Cannot allocate 2305843009213693951 bytes of memory (of type binary)\".  The crash is a VM-level abort, not an Erlang-level exception. It cannot be intercepted by supervision trees, by try/catch, or by passing the [safe] option to binary_to_term/2 (which only restricts atom creation and does not perform structural validation of binary encodings).  Any application that decodes ETF from untrusted sources via binary_to_term/1,2 or enif_binary_to_term() is exposed. The Erlang distribution protocol also decodes incoming terms through the same code path, but distribution is expected to run on trusted networks per the OTP Secure Coding Guidelines (DSG-011).  This issue affects OTP from OTP 27.0 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15, corresponding to erts from 15.0 before 17.0.4, 16.4.0.4 and 15.2.7.11.","modified":"2026-09-01T16:06:51.145120289Z","published":"2026-07-27T16:17:41.437Z","upstream":["CVE-2026-54890"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-54890"}],"affected":[{"package":{"name":"erlang","ecosystem":"Debian:12","purl":"pkg:deb/debian/erlang?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:25.2.3+dfsg-1","1:25.2.3+dfsg-1+deb12u1","1:25.2.3+dfsg-1+deb12u2","1:25.2.3+dfsg-1+deb12u3","1:25.2.3+dfsg-1+deb12u4","1:25.3.2.10+dfsg-1","1:25.3.2.10+dfsg-2","1:25.3.2.11+dfsg-1","1:25.3.2.12+dfsg-1","1:25.3.2.12+dfsg-2","1:25.3.2.12+dfsg-3","1:25.3.2.8+dfsg-1","1:26.0+dfsg-1","1:26.0.1+dfsg-1","1:26.0.2+dfsg-1","1:26.0~rc2+dfsg-1","1:26.0~rc3+dfsg-1","1:26.1.2+dfsg-1","1:26.2.1+dfsg-1","1:26.2.4+dfsg-1","1:27.0+dfsg-1","1:27.0.1+dfsg-1","1:27.0.1+dfsg-2","1:27.0.1+dfsg-3","1:27.0~rc3+dfsg-1","1:27.0~rc3+dfsg-2","1:27.0~rc3+dfsg-3","1:27.0~rc3+dfsg-4","1:27.1.2+dfsg-1","1:27.2+dfsg-1","1:27.2+dfsg-2","1:27.2+dfsg-3~exp1","1:27.2.1+dfsg-1","1:27.2.1+dfsg-2","1:27.2.2+dfsg-1","1:27.2.3+dfsg-1","1:27.2.4+dfsg-1","1:27.3+dfsg-1","1:27.3.1+dfsg-1","1:27.3.2+dfsg-1","1:27.3.3+dfsg-1","1:27.3.4+dfsg-1","1:27.3.4.1+dfsg-1","1:27.3.4.10+dfsg-1","1:27.3.4.11+dfsg-1","1:27.3.4.11+dfsg-2","1:27.3.4.11+dfsg-3","1:27.3.4.11+dfsg-4","1:27.3.4.11+dfsg-5","1:27.3.4.11+dfsg-6","1:27.3.4.11+dfsg-7","1:27.3.4.12+dfsg-1","1:27.3.4.3+dfsg-1","1:27.3.4.4+dfsg-1","1:27.3.4.6+dfsg-1","1:27.3.4.8+dfsg-1","1:27.3.4.9+dfsg-1","1:28.0+dfsg-1","1:28.0.1+dfsg-1","1:28.0.2+dfsg-1","1:28.0.4+dfsg-1","1:28.1.1+dfsg-1","1:28.2+dfsg-1","1:28.3+dfsg-1","1:28.3.1+dfsg-1","1:29.0+dfsg-1","1:29.0+dfsg-2","1:29.0.1+dfsg-1","1:29.0.2+dfsg-1","1:29.0.3+dfsg-1","1:29.0.4+dfsg-1","1:29.0~rc1+dfsg-1","1:29.0~rc1+dfsg-2","1:29.0~rc2+dfsg-1","1:29.0~rc3+dfsg-1","1:29.0~rc3+dfsg-2","1:29.0~rc3+dfsg-3","1:29.0~rc3+dfsg-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54890.json"}},{"package":{"name":"erlang","ecosystem":"Debian:13","purl":"pkg:deb/debian/erlang?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:27.3.4.1+dfsg-1+deb13u3"}]}],"versions":["1:27.3.4.1+dfsg-1","1:27.3.4.1+dfsg-1+deb13u1","1:27.3.4.1+dfsg-1+deb13u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54890.json"}},{"package":{"name":"erlang","ecosystem":"Debian:14","purl":"pkg:deb/debian/erlang?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:29.0.4+dfsg-1"}]}],"versions":["1:27.3.4.1+dfsg-1","1:27.3.4.10+dfsg-1","1:27.3.4.11+dfsg-1","1:27.3.4.11+dfsg-2","1:27.3.4.11+dfsg-3","1:27.3.4.11+dfsg-4","1:27.3.4.11+dfsg-5","1:27.3.4.11+dfsg-6","1:27.3.4.11+dfsg-7","1:27.3.4.12+dfsg-1","1:27.3.4.3+dfsg-1","1:27.3.4.4+dfsg-1","1:27.3.4.6+dfsg-1","1:27.3.4.8+dfsg-1","1:27.3.4.9+dfsg-1","1:28.0+dfsg-1","1:28.0.1+dfsg-1","1:28.0.2+dfsg-1","1:28.0.4+dfsg-1","1:28.1.1+dfsg-1","1:28.2+dfsg-1","1:28.3+dfsg-1","1:28.3.1+dfsg-1","1:29.0+dfsg-1","1:29.0+dfsg-2","1:29.0.1+dfsg-1","1:29.0.2+dfsg-1","1:29.0.3+dfsg-1","1:29.0~rc1+dfsg-1","1:29.0~rc1+dfsg-2","1:29.0~rc2+dfsg-1","1:29.0~rc3+dfsg-1","1:29.0~rc3+dfsg-2","1:29.0~rc3+dfsg-3","1:29.0~rc3+dfsg-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54890.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}