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OpenAdvisories
High ELSA-2026-25239 15 CVEs

Important: openssl security update (Oracle Linux 9)

Published Jun 23, 2026 · Updated Jun 23, 2026

Summary

[3.5.5-4.0.1]
- Replace upstream references [Orabug: 34340177]

[3.5.5.openela.0.1]
- Add OpenELA specific changes

[1:3.5.5-4]
- Fix CVE-2026-7383, CVE-2026-9076, CVE-2026-34180, CVE-2026-34181,
CVE-2026-34183, CVE-2026-42764, CVE-2026-42766, CVE-2026-42767, CVE-2026-42768,
CVE-2026-42769, CVE-2026-42770, CVE-2026-45445, CVE-2026-45446, CVE-2026-45447,
CVE-2026-34182.
Resolves: RHEL-179274
Resolves: RHEL-179287
Resolves: RHEL-179539
Resolves: RHEL-179544
Resolves: RHEL-179547
Resolves: RHEL-179552
Resolves: RHEL-179556
Resolves: RHEL-179633
Resolves: RHEL-179661
Resolves: RHEL-179678
Resolves: RHEL-179684
Resolves: RHEL-179688
Resolves: RHEL-179691
Resolves: RHEL-179696
Resolves: RHEL-179699

[1:3.5.5-3]
- Fix CVE-2026-28390
Resolves: RHEL-165870

Fixed packages 4

ReleasePackageFixed in
Oracle Linux · 9 openssl 1:3.5.5-4.0.1.el9_8
Oracle Linux · 9 openssl-devel 1:3.5.5-4.0.1.el9_8
Oracle Linux · 9 openssl-libs 1:3.5.5-4.0.1.el9_8
Oracle Linux · 9 openssl-perl 1:3.5.5-4.0.1.el9_8

Vulnerabilities 15

  • Critical 9.1

    CMS AuthEnvelopedData Processing May Accept Forged Messages

    Issue Summary: Cryptographic Message Services (CMS) processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of …

  • 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…

  • High 8.1

    Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion

    Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in ASN1_mbstring_ncopy() can lead to a heap buffer overflow. Impact summary: A heap buffer overflow may lead to a crash or possibly attacker controlled code executi…

  • High 7.5

    Heap Buffer Over-read in ASN.1 Content Parsing

    Issue summary: Parsing a crafted DER-encoded ASN.1 structure with a primitive element whose content exceeds 2 gigabytes in length may cause a heap buffer over-read on 64-bit Unix and Unix-like platforms. Impact summary: The heap buffer over-read may crash the…

  • High 7.5

    Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler

    Issue summary: Remote peer may exhaust heap memory of the QUIC server or client by flooding it with packets containing PATH_CHALLENGE frames. Impact summary: A malicious remote peer can cause an unbounded memory allocation which can lead to an abnormal termin…

  • High 7.5

    NULL Pointer Dereference in QUIC Server Initial Packet Handling

    Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled. Impact summary: NULL pointer dereference typically causes abnormal termination of the affe…

  • High 7.5

    AES-OCB IV Ignored on EVP_Cipher() Path

    Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() one-shot interface, the application-supplied initialisation vector (IV) is silently discarded. Impact summary: Every message encrypted under the same key uses the sam…

  • High 7.5

    Out-of-Bounds Read in CMS Password-Based Decryption

    Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kek_unwrap_key(). Impact summary: A heap buffer over-read m…

  • High 7.4

    PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys

    Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker im…

  • Medium 5.9

    Possible NULL Dereference in Password-Based CMS Decryption

    Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.…

  • Medium 5.9

    NULL Pointer Dereference in CRMF EncryptedValue Decryption

    Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application. Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service. An a…

  • Medium 5.3

    Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate

    Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from …

  • Medium 4.8

    Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes

    Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty m…

  • Low 3.7

    Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt()

    Issue summary: The CMS_decrypt and PKCS7_decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-sty…

  • Low 3.7

    FFC-DH Peer Validation Uses Attacker-Supplied q

    Issue summary: When EVP_PKEY_derive_set_peer() is called with a DHX (X9.42) peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a fo…