ash-project ash up to 3.32.1 Vector lib/ash/vector.ex Ash.Vector.new integer overflow

Summaryinfo

A vulnerability was found in ash-project ash up to 3.32.1 and classified as problematic. This affects the function Ash.Vector.new of the file lib/ash/vector.ex of the component Vector. Such manipulation leads to integer overflow. This vulnerability is referenced as CVE-2026-82737. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in ash-project ash up to 3.32.1. It has been rated as problematic. Affected by this issue is the function Ash.Vector.new of the file lib/ash/vector.ex of the component Vector. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is integrity, and availability. CVE summarizes:

Integer Overflow or Wraparound vulnerability in ash-project ash lets an attacker corrupt a stored vector and crash later reads of it by submitting a vector with more than 65,535 elements. Ash.Vector.new/1 (lib/ash/vector.ex) encodes a vector as <<dim::unsigned-16, 0::unsigned-16>> followed by the element floats, packing the element count into a 16-bit field without checking its range. A list of more than 65,535 elements wraps the dimension modulo 65,536, so the encoded header records a dimension that disagrees with the number of stored floats. from_binary/1 later reads binary-size(dim)-unit(32) from the wrapped header, so every read of the corrupted value misparses and raises, denying access to the affected record. The fix rejects any vector whose dimension exceeds 65,535. This issue affects ash: from 2.14.13 before 3.32.2.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-82737 since 08/31/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

Upgrading to version 3.32.2 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Project Management Software

Vendor

• ash-project

Name

• ash

Version

• 3.32.0
• 3.32.1

Website

• Product: https://github.com/ash-project/ash/

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion