UBUNTU-CVE-2026-54890
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.
UBUNTU-CVE-2026-54890
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:UBUNTU-CVE-2026-54890
erlang
Source reference: /affected/0/package/name
- Affected versions
- 1:27.3.4.1+dfsg-1build1
Source reference:
/affected/0/versions1:27.3.4.3+dfsg-1Source reference:
/affected/0/versions1:27.3.4.4+dfsg-1Source reference:
/affected/0/versions1:27.3.4.6+dfsg-1Source reference:
/affected/0/versions - Fixed versions
- 1:27.3.4.6+dfsg-1ubuntu0.1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:27.3.4.6+dfsg-1ubuntu0.1"
}
]
}
],
"package": {
"name": "erlang",
"purl": "pkg:deb/ubuntu/erlang?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1:27.3.4.1+dfsg-1build1",
"1:27.3.4.3+dfsg-1",
"1:27.3.4.4+dfsg-1",
"1:27.3.4.6+dfsg-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54890.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "erlang",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-asn1",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-base",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-common-test",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-crypto",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-debugger",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-dialyzer",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-diameter",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-edoc",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-eldap",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-et",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-eunit",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-examples",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-ftp",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-inets",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-jinterface",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-megaco",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-mnesia",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-mode",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-nox",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-observer",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-odbc",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-os-mon",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-parsetools",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-public-key",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-reltool",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-runtime-tools",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-snmp",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-src",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-ssh",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-ssl",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-syntax-tools",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-tftp",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-tools",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-wx",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-x11",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
},
{
"binary_name": "erlang-xmerl",
"binary_version": "1:27.3.4.6+dfsg-1ubuntu0.1"
}
],
"availability": "No subscription required"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #23711 · Revision 1
- Added to Heist Feed
- Publisher date