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.

Routine

CVSS

n/a

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0013

2nd percentile

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

Product	Fixed in	Fix	Released
Linux
runfinch-finch · amzn 2023	1.19.0-1.amzn2023.0.2	ALAS2023-2026-3264	Nov 7, 2026

Details

Published
October 9, 2026
Weakness
Improper Validation of Array Index
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93322

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