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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 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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Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorydenial of serviceUbuntu

Ubuntu 25.10: .NET Important Denial of Service & SMTP Issue USN-7822-1

Several security issues were fixed in .NET. ========================================================================== Ubuntu Security Notice USN-7822-1 October 16, 2025 dotnet8, dotnet9, dotnet10 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in .NET Software Description: - dotnet10: .NET CLI tools and runtime - dotnet8: .NET CLI tools and runtime - dotnet9: .NET CLI tools and runtime Details: It was discovered that .NET did not properly handle the creation of temporary build time directories. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-55247) It was discovered that .NET did not properly establish TLS sessions for SMTP server connections. An attacker could use this issue to cause .NET to use unencrypted connections. This issue only affects .NET versions 8.0 and 9.0. (CVE-2025-55248) It was discovered that .NET inconsistently interpreted certain http requests. An attacker could possibly use this to bypass a security feature over a network. (CVE-2025-55315) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 aspnetcore-runtime-10.0 10.0.0~rc2-0ubuntu1~25.10.2 aspnetcore-runtime-8.0 8.0.21-0ubuntu1~25.10.1 aspnetcore-runtime-9.0 9.0.10-0ubuntu1~25.10.1 dotnet-host-10.0 10.0.0~rc2-0ubuntu1~25.10.2 dotnet-host-8.0 8.0.21-0ubuntu1~25.10.1 dotnet-host-9.0 9.0.10-0ubuntu1~25.10.1 dotnet-hostfxr-10.0 10.0.0~rc2-0ubuntu1~25.10.2 dotnet-hostfxr-8.0 8.0.21-0ubuntu1~25.10.1 dotnet-hostfxr-9.0 9.0.10-0ubuntu1~25.10.1 dotnet-runtime-10.0 10.0.0~rc2-0ubuntu1~25.10.2 dotnet-runtime-8.0 8.0.21-0ubuntu1~25.10.1 dotnet-runtime-9.0 9.0.10-0ubuntu1~25.10.1 dotnet-sdk-10.0 10.0.100~rc2-0ubuntu1~25.10.2 dotnet-sdk-8.0 8.0.121-0ubuntu1~25.10.1 dotnet-sdk-9.0 9.0.111-0ubuntu1~25.10.1 dotnet-sdk-aot-10.0 10.0.100~rc2-0ubuntu1~25.10.2 dotnet-sdk-aot-9.0 9.0.111-0ubuntu1~25.10.1 dotnet10 10.0.100-10.0.0~rc2-0ubuntu1~25.10.2 dotnet8 8.0.121-8.0.21-0ubuntu1~25.10.1 dotnet9 9.0.111-9.0.10-0ubuntu1~25.10.1 Ubuntu 25.04 aspnetcore-runtime-8.0 8.0.21-0ubuntu1~25.04.1 aspnetcore-runtime-9.0 9.0.10-0ubuntu1~25.04.1 dotnet-host-8.0 8.0.21-0ubuntu1~25.04.1 dotnet-host-9.0 9.0.10-0ubuntu1~25.04.1 dotnet-hostfxr-8.0 8.0.21-0ubuntu1~25.04.1 dotnet-hostfxr-9.0 9.0.10-0ubuntu1~25.04.1 dotnet-runtime-8.0 8.0.21-0ubuntu1~25.04.1 dotnet-runtime-9.0 9.0.10-0ubuntu1~25.04.1 dotnet-sdk-8.0 8.0.121-0ubuntu1~25.04.1 dotnet-sdk-9.0 9.0.111-0ubuntu1~25.04.1 dotnet-sdk-aot-9.0 9.0.111-0ubuntu1~25.04.1 dotnet8 8.0.121-8.0.21-0ubuntu1~25.04.1 dotnet9 9.0.111-9.0.10-0ubuntu1~25.04.1 Ubuntu 24.04 LTS aspnetcore-runtime-8.0 8.0.21-0ubuntu1~24.04.1 dotnet-host-8.0 8.0.21-0ubuntu1~24.04.1 dotnet-hostfxr-8.0 8.0.21-0ubuntu1~24.04.1 dotnet-runtime-8.0 8.0.21-0ubuntu1~24.04.1 dotnet-sdk-8.0 8.0.121-0ubuntu1~24.04.1 dotnet8 8.0.121-8.0.21-0ubuntu1~24.04.1 Ubuntu 22.04 LTS aspnetcore-runtime-8.0 8.0.21-0ubuntu1~22.04.1 dotnet-host-8.0 8.0.21-0ubuntu1~22.04.1 dotnet-hostfxr-8.0 8.0.21-0ubuntu1~22.04.1 dotnet-runtime-8.0 8.0.21-0ubuntu1~22.04.1 dotnet-sdk-8.0 8.0.121-0ubuntu1~22.04.1 dotnet8 8.0.121-8.0.21-0ubuntu1~22.04.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7822-1 CVE-2025-55247, CVE-2025-55248, CVE-2025-55315 Package Information: https://launchpad.net/ubuntu/+source/dotnet10/10.0.100-10.0.0~rc2-0ubuntu1~25.10.2 https://launchpad.net/ubuntu/+source/dotnet8/8.0.121-8.0.21-0ubuntu1~25.10.1 https://launchpad.net/ubuntu/+source/dotnet9/9.0.111-9.0.10-0ubuntu1~25.10.1 https://launchpad.net/ubuntu/+source/dotnet8/8.0.121-8.0.21-0ubuntu1~25.04.1 https://launchpad.net/ubuntu/+source/dotnet9/9.0.111-9.0.10-0ubuntu1~25.04.1 https://launchpad.net/ubuntu/+source/dotnet8/8.0.121-8.0.21-0ubuntu1~24.04.1 https://launchpad.net/ubuntu/+source/dotnet8/8.0.121-8.0.21-0ubuntu1~22.04.1 . Critical updates for .NET on Ubuntu to mitigate denial of service and SMTP security risks. Act promptly to secure your system.. Ubuntu .NET Security, Dotnet Updates, Security Fixes, Package Vulnerabilities. . Severity: Important. LinuxSecurity.com Team

Calendar 2 Oct 16, 2025 •Important Ubuntu
203
Ls Advisories Mageia Esm H240
Price Tag 1security advisorycriticalsoftware update

Mageia 7: MGASA-2020-0450 Critical: Thunderbird Stack Corruption Issue

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable (CVE-2020-26970). . MGASA-2020-0450 - Updated thunderbird packages fix security vulnerability Publication date: 05 Dec 2020 URL: https://advisories.mageia.org/MGASA-2020-0450.html Type: security Affected Mageia releases: 7 CVE: CVE-2020-26970 When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable (CVE-2020-26970). References: - https://bugs.mageia.org/show_bug.cgi?id=27707 - https://www.mozilla.org/en-US/security/advisories/mfsa2020-53/ - https://www.thunderbird.net/en-US/thunderbird/78.5.1/releasenotes/ - https://www.cve.org/CVERecord?id=CVE-2020-26970 SRPMS: - 7/core/thunderbird-78.5.1-1.mga7 - 7/core/thunderbird-l10n-78.5.1-1.mga7 - 7/core/rootcerts-20201201.00-1.mga7 . New Thunderbird updates address a severe stack overflow vulnerability, presenting security concerns for its users.. Thunderbird Update, Mageia Security, Stack Corruption, Software Exploit, SMTP Issue. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Dec 05, 2020 •Critical Mageia
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