# CVE-2026-93322: Malformed MergeOp can crash the BuildKit daemon

CVE-2026-93322 is fixed in runfinch-finch on 1 platform by ALAS2023-2026-3264 (version 1.19.0-1.amzn2023.0.2), released November 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-93322
- Priority: Routine
- CVSS: n/a (Moderate)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 9, 2026
- Weakness: Improper Validation of Array Index
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93322

## Description

A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | runfinch-finch amzn 2023 | 1.19.0-1.amzn2023.0.2 | [ALAS2023-2026-3264](https://patchblox.com/security/data/fix/linux/alas2023-2026-3264.md) | Nov 7, 2026 |

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Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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