Summary
The OpenSSL toolkit provides support for secure communications between machines. This version of OpenSSL package contains only the libraries from the 1.1.1 version and is provided for compatibility with previous releases.
Security Fix(es):
* openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
* openssl: compat-openssl: DTLS Retransmits Handshake Messages From a Stale Buffer Offset (CVE-2026-84782)
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | compat-openssl11 | 1:1.1.1k-5.el9_8.6 |
Vulnerabilities 2
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High 8.2
DTLS Retransmits Handshake Messages From a Stale Buffer Offset
Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspend…
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High 7.5CVE-2026-63072 Public exploit
Heap Buffer Overflow in CMS Key Unwrapping
Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive can write and cleanse more bytes than that query reports, causing an 8-byte out-of-bounds heap write. Impa…