Issued:
2026-06-11
Updated:
2026-06-11

RHSA-2026:25237 - Important: openssl security update

Synopsis

Important: openssl security update

Type/Severity

Security Advisory Important

Topic

An update for openssl is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

  • openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing (CVE-2026-7383)

  • openssl: OpenSSL: Denial of Service due to heap out-of-bounds read in CMS password-based decryption (CVE-2026-9076)

  • openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure. (CVE-2026-34180)

  • openssl: PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys (CVE-2026-34181)

  • openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages (CVE-2026-34182)

  • openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler (CVE-2026-34183)

  • openssl: NULL pointer dereference in QUIC server initial packet handling (CVE-2026-42764)

  • openssl: Possible NULL Dereference in Password-Based CMS Decryption (CVE-2026-42766)

  • openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption (CVE-2026-42767)

  • openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt() (CVE-2026-42768)

  • openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate (CVE-2026-42769)

  • openssl: FFC-DH Peer Validation Uses Attacker-Supplied q (CVE-2026-42770)

  • openssl: AES-OCB IV Ignored on EVP_Cipher() Path (CVE-2026-45445)

  • openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes (CVE-2026-45446)

  • openssl: Heap Use-After-Free in OpenSSL PKCS7_verify() (CVE-2026-45447)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_6410x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support10.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle10.2x86_64
Red Hat Enterprise Linux for x86_64 - 4 years of updates10.2x86_64
Red Hat Enterprise Linux for Power, little endian10ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support10.2ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle10.2ppc64le
Red Hat Enterprise Linux for Power, little endian - 4 years of support10.2ppc64le
Red Hat Enterprise Linux for IBM z Systems10s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support10.2s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle10.2s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates10.2s390x
Red Hat Enterprise Linux for ARM 6410aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support10.2aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle10.2aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates10.2aarch64

Updated Packages

  • openssl-libs-debuginfo-3.5.5-4.el10_2.s390x.rpm
  • openssl-debugsource-3.5.5-4.el10_2.aarch64.rpm
  • openssl-devel-3.5.5-4.el10_2.s390x.rpm
  • openssl-perl-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-devel-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-debuginfo-3.5.5-4.el10_2.s390x.rpm
  • openssl-libs-debuginfo-3.5.5-4.el10_2.x86_64.rpm
  • openssl-3.5.5-4.el10_2.aarch64.rpm
  • openssl-debugsource-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-debuginfo-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-debugsource-3.5.5-4.el10_2.x86_64.rpm
  • openssl-libs-3.5.5-4.el10_2.aarch64.rpm
  • openssl-devel-3.5.5-4.el10_2.x86_64.rpm
  • openssl-devel-3.5.5-4.el10_2.aarch64.rpm
  • openssl-debuginfo-3.5.5-4.el10_2.aarch64.rpm
  • openssl-libs-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-libs-3.5.5-4.el10_2.s390x.rpm
  • openssl-perl-3.5.5-4.el10_2.s390x.rpm
  • openssl-3.5.5-4.el10_2.s390x.rpm
  • openssl-libs-debuginfo-3.5.5-4.el10_2.ppc64le.rpm
  • openssl-perl-3.5.5-4.el10_2.aarch64.rpm
  • openssl-3.5.5-4.el10_2.x86_64.rpm
  • openssl-3.5.5-4.el10_2.src.rpm
  • openssl-libs-debuginfo-3.5.5-4.el10_2.aarch64.rpm
  • openssl-debugsource-3.5.5-4.el10_2.s390x.rpm
  • openssl-perl-3.5.5-4.el10_2.x86_64.rpm
  • openssl-debuginfo-3.5.5-4.el10_2.x86_64.rpm
  • openssl-libs-3.5.5-4.el10_2.x86_64.rpm

Fixes

CVEs

References

Additional information