Debian alert DLA-4653-1 (openvpn)

From:
             
 
Daniel Leidert <dleidert@debian.org>
To:
             
 
debian-lts-announce@lists.debian.org
Subject:
             
 
[SECURITY] [DLA 4653-1] openvpn security update
Date:
             
 
Sat, 27 Jun 2026 01:05:59 +0200
Message-ID:
             
 
<383b92dc2365e8998b13b363dbdd2889b9bbce7c.camel@debian.org>
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Debian LTS Advisory DLA-4653-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                       Daniel Leidert
June 27, 2026                                 https://wiki.debian.org/LTS
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Package        : openvpn
Version        : 2.5.1-3+deb11u3
CVE ID         : CVE-2026-35058 CVE-2026-40215

Two security vulnerabilities were discovered in OpenVPN, a virtual
private network application.

CVE-2026-35058

   Improper validation of packet length during tls-crypt-v2 key
   extraction allows authenticated attackers to trigger a fatal
   assertion and cause a denial of service via a specially crafted
   packet.

CVE-2026-40215

   A race condition allows remote attackers to potentially cause a server
   crash or leak heap memory via a use-after-free triggered during TLS
   session promotion.

For Debian 11 bullseye, these problems have been fixed in version
2.5.1-3+deb11u3.

We recommend that you upgrade your openvpn packages.

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

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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