UBUNTU-CVE-2026-54890
- Source
- https://ubuntu.com/security/CVE-2026-54890
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54890.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-54890
- Upstream
- Published
- 2026-07-27T16:17:00Z
- Modified
- 2026-09-22T22:55:19Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- 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.
- References
Affected packages
Ubuntu:26.04:LTS / erlang
Package
- Name
- erlang
- Purl
- pkg:deb/ubuntu/erlang?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1:27.*
Ecosystem specific
{
"binaries": [
{
"binary_name": "erlang",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-asn1",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-base",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-common-test",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-crypto",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-debugger",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-dialyzer",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-diameter",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-edoc",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-eldap",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-et",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-eunit",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-examples",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-ftp",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-inets",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-jinterface",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-megaco",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-mnesia",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-mode",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-nox",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-observer",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-odbc",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-os-mon",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-parsetools",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-public-key",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-reltool",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-runtime-tools",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-snmp",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-src",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-ssh",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-ssl",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-syntax-tools",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-tftp",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-tools",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-wx",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-x11",
"binary_version": "1:27.3.4.6+dfsg-1"
},
{
"binary_name": "erlang-xmerl",
"binary_version": "1:27.3.4.6+dfsg-1"
}
]
}