EVE Freely Allocates Buffer on The Stack With Data From Socket

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS

• CVE-2023-43632: 0.66% estimated exploitation activity in the next 30 days; percentile 51.53 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact VTPM server listens on port 8877, exposing limited TPM functionality. The server reads 4 bytes as a uint32 size header, then allocates that amount on the stack for incoming data. This allows Denial of Service attacks against the vTPM service. An workload (a container or VM) running on EVE-OS can use this to generate a DOS against the vTPM service. Patches Fixed in 9.4.3-lts and 10.1.0 Workarounds None

Published by the source

4 Feb 2026, 20:47 UTC

Last modified by the source

4 Feb 2026, 20:47 UTC

Source last checked

26 Oct 2026, 15:14 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-6jp5-grgh-jw42

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# Patch Next advisory brief: CVE-2023-43632

Advisory: EVE Freely Allocates Buffer on The Stack With Data From Socket
IDs: CVE-2023-43632, GHSA-6jp5-grgh-jw42
Record: https://patchnext.com/advisories/cve-2023-43632 (revision 1, source checked 26 Oct 2026, 15:14 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/lf-edge/eve 0.0.0-20230519072751-977f42b07fa9. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/lf-edge/eve: affected < 0.0.0-20230519072751-977f42b07fa9; fixed in 0.0.0-20230519072751-977f42b07fa9

## Suggested inspection (read-only)
- Go github.com/lf-edge/eve: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/lf-edge/eve.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6jp5-grgh-jw42 (GitHub-reviewed advisory GHSA-6jp5-grgh-jw42 lists affected ranges: Go github.com/lf-edge/eve >=0 <0.0.0-20230519072751-977f42b07fa9)

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