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OpenAdvisories
High ALAS2023-2026-1586 5 CVEs

Important: openssl security update (Amazon Linux 2023)

Published Apr 13, 2026 · Updated Apr 13, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-31790: Incorrect failure handling in RSA KEM RSASVE encapsulation CVE-2026-28390: Possible NULL dereference when processing CMS KeyTransportRecipientInfo CVE-2026-28389: Possible NULL dereference when processing CMS KeyAgreeRecipientInfo CVE-2026-28388: NULL Pointer Dereference When Processing a Delta CRL NOTE: https://openssl-library.org/news/secadv/20260407.txt CVE-2026-28387: Potential use-after-free in DANE client code

Fixed packages 11

ReleasePackageFixed in
Amazon Linux · 2023 openssl 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-debuginfo 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-debugsource 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-devel 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-fips-provider-latest 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-fips-provider-latest-debuginfo 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-libs 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-libs-debuginfo 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-perl 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-snapsafe-libs 1:3.5.5-1.amzn2023.0.4
Amazon Linux · 2023 openssl-snapsafe-libs-debuginfo 1:3.5.5-1.amzn2023.0.4

Vulnerabilities 5

  • High 8.1
    CVE-2026-28387

    Potential Use-after-free in DANE Client Code

    Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free ca…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-28388

    NULL Pointer Dereference When Processing a Delta CRL

    Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the required CRL Number extension is missing. Impact summary: A NULL pointer dereference can trigger a crash which leads to a…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-28389

    Possible NULL Dereference When Processing CMS KeyAgreeRecipientInfo

    Issue summary: During processing of a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic o…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-28390

    Possible NULL Dereference When Processing CMS KeyTransportRecipientInfo

    Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptograph…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-31790

    Incorrect Failure Handling in RSA KEM RSASVE Encapsulation

    Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous ex…

    OpenSSL OpenSSL openssl openssl Debian Ubuntu Azure Linux Alpine Wolfi

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-28387.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-28388.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-28389.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-28390.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-31790.html