amazon-efs-utils: A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly...
CVE-2026-4428 is fixed in 5 products on 1 platform, first by ALAS2023-2026-1564, released April 13, 2026. It is not reported as exploited. Patch Radar priority: High.
A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows a revoked certificate to bypass certificate revocation checks.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| amazon-efs-utils · amzn 2023 | 3.0.0-4.amzn2023 | ALAS2023-2026-1564 | Apr 13, 2026 |
| aws-nitro-tpm-tools · amzn 2023 | 1.1.2-1.amzn2023 | ALAS2023-2026-1905 | Jul 6, 2026 |
| mount-s3 · amzn 2023 | 1.22.3-1.amzn2023 | ALAS2023-2026-1655 | May 11, 2026 |
| mount-s3-debuginfo · amzn 2023 | 1.22.3-1.amzn2023 | ALAS2023-2026-1655 | May 11, 2026 |
| mount-s3-debugsource · amzn 2023 | 1.22.3-1.amzn2023 | ALAS2023-2026-1655 | May 11, 2026 |
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