Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Erlang / OTP | unknown 0 before 17.0; affected 17.0 before 27.3.4.17; affected 28.0 before 28.5.0.6; affected 29.0 before 29.0.6 |
| Erlang / OTP | unknown 0 before 6.0; affected 6.0 before 15.2.7.13; affected 16.0 before 16.4.0.6; affected 17.0 before 17.0.6 |
| Erlang / OTP | affected 84adefa331c4159d432d22840663c38f155cd4c1 before 08e8efdba8500d2d6f54c6b1de1492b228017c9b |
CWE
CWE-190, CWE-122
References
- https://github.com/erlang/otp/security/advisories/GHSA-8m6r-2pj2-25pm
- https://cna.erlef.org/cves/CVE-2026-75538.html
- https://osv.dev/vulnerability/EEF-CVE-2026-75538
- https://github.com/erlang/otp/commit/08e8efdba8500d2d6f54c6b1de1492b228017c9b
ADP enrichment
No English description supplied.
No references supplied.