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Stay Secure with the Latest Linux Advisories

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Fedora 43 Kernel Important Security Fix for net/can 2026-f1fc7772c3

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Fedora 43 Nuclei Important Cross-site Scripting DoS Threat 2026-d36ca2dd19

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Fedora 43 perl-Crypt-OpenSSL-X509 Important Fix CVE-2026-58101

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Fedora 43 rust-syslog Critical Path Traversal DoS Vuln 2026-659cb50390

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Fedora 43 Rust RPKI Critical Path Traversal Issues Fix 2026-659cb50390

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Fedora 43 Routinator Important Security Fixes CVE-2026-49232 to 49235

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Fedora 43 rust-fern Important Path Traversal Fix Advisory 2026-659cb50390

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Fedora 44 Kernel Important Net CAN Issue Fix Advisory 2026-2dd8b600bb

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Fedora 44 btrbk Critical Update Snapshot Tool Fix CVE-2026-62943

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/main-polls/157-should-linux-servers-automatically-install-security-updates?task=poll.vote&format=json
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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":0,"type":"x","order":2,"pct":0,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":1,"type":"x","order":4,"pct":100,"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
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Debian FastNetMon Critical DDoS Issues DSA-6375-1 CVE-2026-48683

Multiple security issues have been discovered in FastNetMon, a fast DDoS analyzer: TLS connections were insufficently validated and malformed Netflow/sFlow traffic could result in denial of service. For the stable distribution (trixie), these problems have been fixed in version 1.2.9-0+deb13u1.. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6375-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Moritz Muehlenhoff July 02, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : fastnetmon CVE ID : CVE-2026-48683 CVE-2026-48684 CVE-2026-48685 CVE-2026-48686 CVE-2026-48687 CVE-2026-48688 CVE-2026-48689 CVE-2026-48690 CVE-2026-48691 CVE-2026-48694 CVE-2026-48695 CVE-2026-48696 Multiple security issues have been discovered in FastNetMon, a fast DDoS analyzer: TLS connections were insufficently validated and malformed Netflow/sFlow traffic could result in denial of service. For the stable distribution (trixie), these problems have been fixed in version 1.2.9-0+deb13u1. We recommend that you upgrade your fastnetmon packages. For the detailed security status of fastnetmon please refer to its security tracker page at: https://security-tracker.debian.org/tracker/fastnetmon 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. . - ------------------------------------------------------------------------- Debian Security Advisory. security, fastnetmon, analyzer, connections. . Severity: Important. LinuxSecurity.com Team

Calendar%202 Jul 02, 2026 •Important Debian
172
Ls Advisories Ubuntu Esm H240
Price Tag%201security advisorydenial of servicecritical

Ubuntu FastNetMon Critical DDoS Denial of Service Fix USN-8429-1

Several security issues were fixed in FastNetMon.. ========================================================================== Ubuntu Security Notice USN-8429-1 June 15, 2026 fastnetmon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 24.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in FastNetMon. Software Description: - fastnetmon: High-performance DDoS detector Details: It was discovered that FastNetMon incorrectly validated prefix lengths when decoding BGP NLRI data. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48686) It was discovered that FastNetMon incorrectly sanitized input in the Juniper router integration plugin. An attacker could possibly use this issue to execute arbitrary commands. (CVE-2026-48687) It was discovered that FastNetMon incorrectly handled buffer bounds checks when processing network traffic. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48689) It was discovered that FastNetMon incorrectly handled encoding the BGP AS_PATH attribute. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-48691) It was discovered that FastNetMon incorrectly validated IP address input in the Juniper router integration plugin. An attacker could possibly use this issue to inject arbitrary router configuration commands. (CVE-2026-48694) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS fastnetmon 1.2.8+git20250911-2ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 24.04 LTS fastnetmon 1.2.6-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS fastnetmon 1.1.4-1ubuntu0.1~esm1 Available with Ubuntu Pro After a standard system update you need to restart fastnetmon to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8429-1 CVE-2026-48686, CVE-2026-48687, CVE-2026-48689, CVE-2026-48691, CVE-2026-48694 . Security issues in FastNetMon fixed for Ubuntu versions; critical updates available for DDoS detector.. DDoS detection, FastNetMon security, Ubuntu updates, command execution risk. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Jun 15, 2026 •Critical Ubuntu
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87
Ls Advisories Debian Esm H240
Price Tag%201security advisorydenial of servicedebian

Debian Bookworm DSA-5837-1 critical: fastnetmon denial of service

Two security issues have been discovered in FastNetMon, a fast DDoS analyzer: Malformed Netflow/sFlow traffic could result in denial of service. . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5837-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Moritz Muehlenhoff December 26, 2024 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : fastnetmon CVE ID : CVE-2024-56072 CVE-2024-56073 Two security issues have been discovered in FastNetMon, a fast DDoS analyzer: Malformed Netflow/sFlow traffic could result in denial of service. For the stable distribution (bookworm), these problems have been fixed in version 1.2.4-2+deb12u1. We recommend that you upgrade your fastnetmon packages. For the detailed security status of fastnetmon please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/fastnetmon 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. . The recent Debian Security Advisory DSA-5837-1 details crucial updates for FastNetMon, aimed at preventing vulnerability exploits that may cause DoS attacks. FastNetMon Updates, Debian Security Advisory, DDoS Defense. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Dec 26, 2024 •Critical Debian
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Should Linux servers automatically install security updates?

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/main-polls/157-should-linux-servers-automatically-install-security-updates?task=poll.vote&format=json
157
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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":0,"type":"x","order":2,"pct":0,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":1,"type":"x","order":4,"pct":100,"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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