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OpenAdvisories
Critical RHSA-2026:58563 3 CVEs

Red Hat Security Advisory: openssl security update

Published Aug 24, 2026 · Updated Oct 20, 2026

Ecosystem: Red Hat

Fixed packages 5

ReleasePackageFixed in
Red Hat · RHEL 7 ELS rhel_els:7 openssl 1:1.0.2k-26.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7 openssl-devel 1:1.0.2k-26.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7 openssl-libs 1:1.0.2k-26.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7 openssl-perl 1:1.0.2k-26.el7_9.2
Red Hat · RHEL 7 ELS rhel_els:7 openssl-static 1:1.0.2k-26.el7_9.2

Vulnerabilities 3

  • Critical 9.1
    CVE-2024-5535 Public exploit

    SSL_select_next_proto buffer overread

    Issue summary: Calling the OpenSSL API function SSL_select_next_proto with an empty supported client protocols buffer may cause a crash or memory contents to be sent to the peer. Impact summary: A buffer overread can have a range of potential consequences suc…

    OpenSSL OpenSSL openssl nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  • High 8.8
    CVE-2026-45447 Public exploit

    Heap Use-After-Free in the PKCS7_verify() Function

    Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When…

    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

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2294581
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2456314
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2481898
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_58563.json
  • report
    https://access.redhat.com/security/cve/CVE-2024-5535
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2024-5535
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2024-5535
  • article
    https://www.oracle.com/security-alerts/cpuoct2024.html#AppendixMSQL
  • report
    https://access.redhat.com/security/cve/CVE-2026-28390
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-28390
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-28390
  • article
    https://github.com/openssl/openssl/commit/01194a8f1941115cd0383bfa91c736dd3993c8bc
  • article
    https://github.com/openssl/openssl/commit/2e39b7a6993be445fddb9fbce316fa756e0397b6
  • article
    https://github.com/openssl/openssl/commit/af2a5fecd3e71a29e7568f9c1453dec5cebbaff4
  • article
    https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788
  • article
    https://github.com/openssl/openssl/commit/fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75
  • article
    https://openssl-library.org/news/secadv/20260407.txt
  • report
    https://access.redhat.com/security/cve/CVE-2026-45447
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-45447
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-45447