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Debian Dovecot High Severity Service Disruption Info Leak Flaw DLA-4617-1

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Debian 11 gsasl Critical DoS Threat Advisory DLA-4618-1 CVE-2026-48829

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SUSE MozillaThunderbird Important Memory Safety Fix Advisory 2026-2271-1

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SUSE Linux Micro 6.0 Ignition Key HTTP Transport Loop Patch 2026-21987-1

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SUSE Linux Micro 6.0 Important Libzypp Libsolv Security Update 2026-21988-1

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SUSE Google-Guest-Agent Important Security Update 2026-21989-1

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SUSE Linux Micro Important Salt Multi-Linux Manager Vuln 2026-21990-1

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SUSE Linux Micro Critical Ignition Patch CVE-2026-33814

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SUSE Linux Micro 6.1 Security Update for libzypp libsolv Key 2026-21992-1

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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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Debian 11 gnutls28 Critical Denial Of Service CVE-2025-9820 DLA-4492-1

Vulnerabilities were found in GnuTLS, a portable library which implements the Transport Layer Security and Datagram Transport Layer Security protocols, which may lead to Denial of Service. CVE-2025-9820 An out-of-bound write issue was discovered when a PKCS#11 token is. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4492-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Guilhem Moulin February 25, 2026 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : gnutls28 Version : 3.7.1-5+deb11u9 CVE ID : CVE-2025-9820 CVE-2025-14831 Debian Bug : 1121146 Vulnerabilities were found in GnuTLS, a portable library which implements the Transport Layer Security and Datagram Transport Layer Security protocols, which may lead to Denial of Service. CVE-2025-9820 An out-of-bound write issue was discovered when a PKCS#11 token is initialized with the `gnutls_pkcs11_token_init()` function and it is passed a token label longer than 32 characters. CVE-2025-14831 Tim Scheckenbach discovered that verifying specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs) could lead to resource exhaustion. For Debian 11 bullseye, these problems have been fixed in version 3.7.1-5+deb11u9. We recommend that you upgrade your gnutls28 packages. For the detailed security status of gnutls28 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/gnutls28 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 . GnuTLS faces critical security risks in Debian LTS that may cause Denial of Service. Learn more and upgrade now!. GnuTLS, Debian, Denial of Service,Security Updates. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Feb 25, 2026 •Critical Debian LTS
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Ls Advisories Redhat Esm H240
Price Tag 1security advisorysecurity issuesendmail

Red Hat: RHSA-2011:0262-01 Low Severity: Sendmail TLS Vulnerability Risk

Updated sendmail packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having low [More...]. ==================================================================== Red Hat Security Advisory Synopsis: Low: sendmail security and bug fix update Advisory ID: RHSA-2011:0262-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2011:0262.html Issue date: 2011-02-16 CVE Names: CVE-2009-4565 ==================================================================== 1. Summary: Updated sendmail packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux Desktop version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64 3. Description: Sendmail is a Mail Transport Agent (MTA) used to send mail between machines. A flaw was found in the way sendmail handled NUL characters in the CommonName field of X.509 certificates. An attacker able to get a carefully-crafted certificate signed by a trusted Certificate Authority could trick sendmail into accepting it by mistake, allowing the attacker to perform a man-in-the-middle attack or bypass intended client certificate authentication. (CVE-2009-4565) The CVE-2009-4565 issue only affected configurations using TLS with certificate verification and CommonName checking enabled, which is not a typical configuration. This update also fixes the following bugs: * Previously, sendmaildid not correctly handle mail messages that had a long first header line. A line with more than 2048 characters was split, causing the part of the line exceeding the limit, as well as all of the following mail headers, to be incorrectly handled as the message body. (BZ#499450) * When an SMTP-sender is sending mail data to sendmail, it may spool that data to a file in the mail queue. It was found that, if the SMTP-sender stopped sending data and a timeout occurred, the file may have been left stalled in the mail queue, instead of being deleted. This update may not correct this issue for every situation and configuration. Refer to the Solution section for further information. (BZ#434645) * Previously, the sendmail macro MAXHOSTNAMELEN used 64 characters as the limit for the hostname length. However, in some cases, it was used against an FQDN length, which has a maximum length of 255 characters. With this update, the MAXHOSTNAMELEN limit has been changed to 255. (BZ#485380) All sendmail users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, sendmail will be restarted automatically. 4. Solution: As part of the fix for BZ#434645, a script called purge-mqueue is shipped with this update. It is located in the /usr/share/sendmail/ directory. The primary purpose of this script is a one-time clean up of the mqueue from stalled files that were created before the installation of this update. By default, the script removes all files from /var/spool/mqueue/ that have an atime older than one month. It requires the tmpwatch package to be installed. If you have stalled files in your mqueue you can run this script or clean them manually. It is also possible to use this script as a cron job (for example, by copying it to /etc/cron.daily/), but it should not be needed in most cases, because this update should prevent the creation of new stalled files. Before applying this update, make sure all previously-released errata relevant to your systemhave been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at 5. Bugs fixed (http://bugzilla.redhat.com/): 434645 - DATA timeouts leave behind stale df files in mqueue 485380 - sendmail applies MAXHOSTNAMELEN for FQDN. 552622 - CVE-2009-4565 sendmail: incorrect verification of SSL certificate with NUL in name 6. Package List: Red Hat Enterprise Linux AS version 4: Source: i386: sendmail-8.13.1-6.el4.i386.rpm sendmail-cf-8.13.1-6.el4.i386.rpm sendmail-debuginfo-8.13.1-6.el4.i386.rpm sendmail-devel-8.13.1-6.el4.i386.rpm sendmail-doc-8.13.1-6.el4.i386.rpm ia64: sendmail-8.13.1-6.el4.ia64.rpm sendmail-cf-8.13.1-6.el4.ia64.rpm sendmail-debuginfo-8.13.1-6.el4.ia64.rpm sendmail-devel-8.13.1-6.el4.ia64.rpm sendmail-doc-8.13.1-6.el4.ia64.rpm ppc: sendmail-8.13.1-6.el4.ppc.rpm sendmail-cf-8.13.1-6.el4.ppc.rpm sendmail-debuginfo-8.13.1-6.el4.ppc.rpm sendmail-devel-8.13.1-6.el4.ppc.rpm sendmail-doc-8.13.1-6.el4.ppc.rpm s390: sendmail-8.13.1-6.el4.s390.rpm sendmail-cf-8.13.1-6.el4.s390.rpm sendmail-debuginfo-8.13.1-6.el4.s390.rpm sendmail-devel-8.13.1-6.el4.s390.rpm sendmail-doc-8.13.1-6.el4.s390.rpm s390x: sendmail-8.13.1-6.el4.s390x.rpm sendmail-cf-8.13.1-6.el4.s390x.rpm sendmail-debuginfo-8.13.1-6.el4.s390x.rpm sendmail-devel-8.13.1-6.el4.s390x.rpm sendmail-doc-8.13.1-6.el4.s390x.rpm x86_64: sendmail-8.13.1-6.el4.x86_64.rpm sendmail-cf-8.13.1-6.el4.x86_64.rpm sendmail-debuginfo-8.13.1-6.el4.x86_64.rpm sendmail-devel-8.13.1-6.el4.x86_64.rpm sendmail-doc-8.13.1-6.el4.x86_64.rpm Red Hat Enterprise Linux Desktop version 4: Source: i386: sendmail-8.13.1-6.el4.i386.rpm sendmail-cf-8.13.1-6.el4.i386.rpm sendmail-debuginfo-8.13.1-6.el4.i386.rpm sendmail-devel-8.13.1-6.el4.i386.rpm sendmail-doc-8.13.1-6.el4.i386.rpm x86_64: sendmail-8.13.1-6.el4.x86_64.rpm sendmail-cf-8.13.1-6.el4.x86_64.rpm sendmail-debuginfo-8.13.1-6.el4.x86_64.rpm sendmail-devel-8.13.1-6.el4.x86_64.rpm sendmail-doc-8.13.1-6.el4.x86_64.rpm Red Hat EnterpriseLinux ES version 4: Source: i386: sendmail-8.13.1-6.el4.i386.rpm sendmail-cf-8.13.1-6.el4.i386.rpm sendmail-debuginfo-8.13.1-6.el4.i386.rpm sendmail-devel-8.13.1-6.el4.i386.rpm sendmail-doc-8.13.1-6.el4.i386.rpm ia64: sendmail-8.13.1-6.el4.ia64.rpm sendmail-cf-8.13.1-6.el4.ia64.rpm sendmail-debuginfo-8.13.1-6.el4.ia64.rpm sendmail-devel-8.13.1-6.el4.ia64.rpm sendmail-doc-8.13.1-6.el4.ia64.rpm x86_64: sendmail-8.13.1-6.el4.x86_64.rpm sendmail-cf-8.13.1-6.el4.x86_64.rpm sendmail-debuginfo-8.13.1-6.el4.x86_64.rpm sendmail-devel-8.13.1-6.el4.x86_64.rpm sendmail-doc-8.13.1-6.el4.x86_64.rpm Red Hat Enterprise Linux WS version 4: Source: i386: sendmail-8.13.1-6.el4.i386.rpm sendmail-cf-8.13.1-6.el4.i386.rpm sendmail-debuginfo-8.13.1-6.el4.i386.rpm sendmail-devel-8.13.1-6.el4.i386.rpm sendmail-doc-8.13.1-6.el4.i386.rpm ia64: sendmail-8.13.1-6.el4.ia64.rpm sendmail-cf-8.13.1-6.el4.ia64.rpm sendmail-debuginfo-8.13.1-6.el4.ia64.rpm sendmail-devel-8.13.1-6.el4.ia64.rpm sendmail-doc-8.13.1-6.el4.ia64.rpm x86_64: sendmail-8.13.1-6.el4.x86_64.rpm sendmail-cf-8.13.1-6.el4.x86_64.rpm sendmail-debuginfo-8.13.1-6.el4.x86_64.rpm sendmail-devel-8.13.1-6.el4.x86_64.rpm sendmail-doc-8.13.1-6.el4.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key#package 7. References: https://access.redhat.com/security/cve/CVE-2009-4565 https://access.redhat.com/security/updates/classification#low 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2011 Red Hat, Inc. . Recent updates to the sendmail packages for Red Hat address a minor bug and rectify a security vulnerability linked to SSL certificate validation.. sendmail update, Red Hat security, TLS risk, sendmail bug fix, low severity advisory. . Severity: Low. LinuxSecurity.com Team

Calendar 2 Feb 16, 2011 •Low Red Hat
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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