CVE-2026-75538

EUVD-2026-69242
An attacker that connects to an open Erlang TCP port that uses the inet driver with {packet,4} mode can use a signed overflow in an incorrect packet length calculation to overflow the receive buffer into the VM allocator area and beyond up to about 2 GB.

This would easily trash the allocated block's allocator metadata footer, and the next block, if any, and most likely cause the BEAM VM to crash. Utilizing this with precision enough to achieve Remote Code Execution would be extremely unfeasible.

This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to erts from 6.0 before 15.2.7.13, from 16.0 before 16.4.0.6, and from 17.0 before 17.0.6. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
EEFCNA
8.2 HIGH
NETWORK
LOW
NONE
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 57.47%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
erlangotp
17.0 ≤
𝑥
< 27.3.4.17
CNA
erlangotp
28.0 ≤
𝑥
< 28.5.0.6
CNA
erlangotp
29.0 ≤
𝑥
< 29.0.6
CNA
erlangotp
6.0 ≤
𝑥
< 15.2.7.13
CNA
erlangotp
16.0 ≤
𝑥
< 16.4.0.6
CNA
erlangotp
17.0 ≤
𝑥
< 17.0.6
CNA
Debian logo
Debian Releases
Debian Product
Codename
erlang
bookworm
vulnerable
bookworm (security)
vulnerable
forky
1:29.1.1+dfsg-1
fixed
sid
1:29.1.1+dfsg-1
fixed
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
erlang
bionic
Fixed 1:20.2.2+dfsg-1ubuntu2+esm3
released
focal
Fixed 1:22.2.7+dfsg-1ubuntu0.5+esm2
released
jammy
Fixed 1:24.2.1+dfsg-1ubuntu0.7
released
noble
Fixed 1:25.3.2.8+dfsg-1ubuntu4.7
released
resolute
Fixed 1:27.3.4.6+dfsg-1ubuntu0.1
released
trusty
Fixed 1:16.b.3-dfsg-1ubuntu2.2+esm2
released
xenial
Fixed 1:18.3-dfsg-1ubuntu3.1+esm3
released
Azure Linux logo
Azure Linux Releases
Azure Package
Release
erlang
Azure Linux 3.0
0:26.2.5.21-6.azl3
fixed