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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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Ls Advisories Debian Esm H240
Price Tag 1security advisorydenial of servicedebian

Debian krb5 Important NegoEx Denial of Service Vuln DSA-6293-1

Cem Onat Karagun discovered two vulnerabilities in the NegoEx parsing in krb5, the MIT implementation of Kerberos. An unauthenticated remote attacker can take advantage of these flaws to cause a denial of service. For the oldstable distribution (bookworm), this problem has been fixed in version 1.20.1-2+deb12u5.. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6293-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso May 22, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : krb5 CVE ID : CVE-2026-40355 Debian Bug : 1135317 Cem Onat Karagun discovered two vulnerabilities in the NegoEx parsing in krb5, the MIT implementation of Kerberos. An unauthenticated remote attacker can take advantage of these flaws to cause a denial of service. For the oldstable distribution (bookworm), this problem has been fixed in version 1.20.1-2+deb12u5. For the stable distribution (trixie), this problem has been fixed in version 1.21.3-5+deb13u1. We recommend that you upgrade your krb5 packages. For the detailed security status of krb5 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/krb5 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Mitigate Denial of Service risks in krb5 with the latest Debian advisory DSA-6293-1 addressing critical vulnerabilities.. Debian Security, krb5 Update, Denial of Service Fix, NegoEx Vulnerabilities. . Severity: Important. LinuxSecurity.com Team

Calendar 2 May 22, 2026 •Important Debian
89
Ls Advisories Fedora Esm H240
Price Tag 1security advisoryfedoraDoS

Fedora 42 krb5 Moderate NegoEx DoS Fix Advisory FEDORA-2026-6c99aaa6d3

Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356). -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-6c99aaa6d3 2026-05-14 04:02:29.141212+00:00 -------------------------------------------------------------------------------- Name : krb5 Product : Fedora 42 Version : 1.21.3 Release : 7.fc42 URL : https://web.mit.edu/kerberos/www/ Summary : The Kerberos network authentication system Description : Kerberos V5 is a trusted-third-party network authentication system, which can improve your network's security by eliminating the insecure practice of sending passwords over the network in unencrypted form. -------------------------------------------------------------------------------- Update Information: Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) -------------------------------------------------------------------------------- ChangeLog: * Wed Apr 29 2026 Julien Rische - 1.21.3-7 - Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) Resolves: rhbz#2463398 rhbz#2463395 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2463395 - CVE-2026-40356 krb5: MIT Kerberos 5 (krb5): Denial of Service via integer underflow and out-of-bounds read [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2463395 [ 2 ] Bug #2463398 - CVE-2026-40355 krb5: MIT Kerberos 5: Denial of Service via NULL pointer dereference in NegoEx mechanism [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2463398 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-6c99aaa6d3' at the command line. For more information, refer to the dnf documentation availableat http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it. Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new . Fix NegoEx parsing issues affecting Fedora 42's krb5 with CVE-2026-40355 and CVE-2026-40356 vulnerabilities.. Fedora krb5 NegoEx DoS CVE fixes. . Severity: Important. LinuxSecurity.com Team

Calendar 2 May 14, 2026 •Important Fedora
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89
Ls Advisories Fedora Esm H240
Price Tag 1security advisorymoderatedenial of service

Fedora 44 krb5 Moderate NegoEx DoS Flaws FEDORA-2026-8b43ea2f82

Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) Add upstream patches to build against openssl 4.0 Make configure.ac work with autoconf 2.73. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-8b43ea2f82 2026-05-02 02:10:24.452831+00:00 -------------------------------------------------------------------------------- Name : krb5 Product : Fedora 44 Version : 1.22.2 Release : 4.fc44 URL : https://web.mit.edu/kerberos/www/ Summary : The Kerberos network authentication system Description : Kerberos V5 is a trusted-third-party network authentication system, which can improve your network's security by eliminating the insecure practice of sending passwords over the network in unencrypted form. -------------------------------------------------------------------------------- Update Information: Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) Add upstream patches to build against openssl 4.0 Make configure.ac work with autoconf 2.73 -------------------------------------------------------------------------------- ChangeLog: * Tue Apr 28 2026 Julien Rische - 1.22.2-4 - Fix NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) - resolves: rhbz#2463398 - resolves: rhbz#2463395 - Add upstream patches to build against openssl 4.0 - Make configure.ac work with autoconf 2.73 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2463395 - CVE-2026-40356 krb5: MIT Kerberos 5 (krb5): Denial of Service via integer underflow and out-of-bounds read [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2463395 [ 2 ] Bug #2463398 - CVE-2026-40355 krb5: MIT Kerberos 5: Denial of Service via NULL pointer dereference in NegoEx mechanism [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2463398 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-8b43ea2f82' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it. Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new . Address critical NegoEx parsing flaws in krb5 for Fedora 44, protecting against DoS vulnerabilities.. krb5 update, Fedora security advisory, NegoEx vulnerabilities, Denial of Service fix. . LinuxSecurity.com Team

Calendar 2 May 02, 2026 Fedora
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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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