Debian alert DLA-4624-1 (openssl)

From:
             
 
Arnaud Rebillout <arnaudr@debian.org>
To:
             
 
debian-lts-announce@lists.debian.org
Subject:
             
 
[SECURITY] [DLA 4624-1] openssl security update
Date:
             
 
Tue, 09 Jun 2026 16:56:25 +0700
Message-ID:
             
 
<09421d6ece396950896580e4e87fd04f@debian.org>
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Debian LTS Advisory DLA-4624-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                     Arnaud Rebillout
June 09, 2026                                 https://wiki.debian.org/LTS
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Package        : openssl
Version        : 1.1.1w-0+deb11u7
CVE ID         : CVE-2026-28387 CVE-2026-28388 CVE-2026-28389 CVE-2026-28390

Several vulnerabilities have been discovered in OpenSSL, a Secure Socket
Layer toolkit providing the SSL and TLS cryptographic protocols for secure
communication over the Internet. 

CVE-2026-28387

    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.

CVE-2026-28388

    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.

CVE-2026-28389

    During processing of a crafted CMS EnvelopedData message with
    KeyAgreeRecipientInfo a NULL pointer dereference can happen.

CVE-2026-28390

    During processing of a crafted CMS EnvelopedData message with
    KeyTransportRecipientInfo a NULL pointer dereference can happen.

For Debian 11 bullseye, these problems have been fixed in version
1.1.1w-0+deb11u7.

We recommend that you upgrade your openssl packages.

For the detailed security status of openssl please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/openssl

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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