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Fedora 43 hplip Major Update Addressing Possible Arbitrary Code Execution

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Oracle Linux 8 Important Kernel Security Advisory ELSA-2026-21706

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Oracle Linux 8 httpd Important Denial of Service Vuln ELSA-2026-22140

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Oracle Linux 8 ELSA-2026-22315 compat-openssl10 Moderate DoS Fix

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Oracle Linux 8 gnutls Important Buffer Overflow Auth Bypass ELSA-2026-20611

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Ubuntu 20.04 LTS nginx Security Advisory for Critical DoS Vulnerabilities

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Ubuntu 20.04 LTS MySQL Important Security Issues USN-8363-2

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Ubuntu 20.04 LTS GStreamer Base Significant DoS Attack Vulnerability Alert

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Ubuntu 26.04 LTS python-pip Moderate DoS Regression Fix USN-8344-3

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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 Deblts Esm H240
Price Tag 1security advisorydenial of servicedebian

Debian LTS DLA-4557-1 pyasn1 Important DoS Attack CVE-2026-30922

It was discovered that pyasn1, a generic ASN.1 library for Python, is vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. This vulnerability can force the decoder to recursively call itself until the Python interpreter crashes with a `RecursionError` or consumes all available memory, crashing the host application.. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4557-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Emmanuel Arias May 01, 2026 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : pyasn1 Version : 0.4.8-1+deb11u2 CVE ID : CVE-2026-30922 Debian Bug : 1131371 It was discovered that pyasn1, a generic ASN.1 library for Python, is vulnerable to a Denial of Service (DoS) attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. This vulnerability can force the decoder to recursively call itself until the Python interpreter crashes with a `RecursionError` or consumes all available memory, crashing the host application. For Debian 11 bullseye, this problem has been fixed in version 0.4.8-1+deb11u2. We recommend that you upgrade your pyasn1 packages. For the detailed security status of pyasn1 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/pyasn1 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 . A critical reminder for users regarding the DoS vulnerability in pyasn1 on Debian LTS. Update now to protect your systems.. Debian LTS, DoS vulnerability, pyasn1 library, system security. . Severity: Important. LinuxSecurity.com Team

Calendar 2 May 01, 2026 •Important Debian LTS
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Ls Advisories Debian Esm H240
Price Tag 1security advisorymoderatedebian

Debian bookworm DSA-6194-1 pyasn1 Medium DoS CVE-2026-30922

It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability when decoding ASN.1 data with deeply nested structures. For the oldstable distribution (bookworm), this problem has been fixed in version 0.4.8-3+deb12u2.. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6194-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso April 03, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : pyasn1 CVE ID : CVE-2026-30922 Debian Bug : 1131371 It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability when decoding ASN.1 data with deeply nested structures. For the oldstable distribution (bookworm), this problem has been fixed in version 0.4.8-3+deb12u2. For the stable distribution (trixie), this problem has been fixed in version 0.6.1-1+deb13u2. We recommend that you upgrade your pyasn1 packages. For the detailed security status of pyasn1 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/pyasn1 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. . Denial of service bug found in pyasn1 on Debian systems, fix versions released for oldstable and stable distributions.. Debian security, pyasn1 issue, denial of service. . LinuxSecurity.com Team

Calendar 2 Apr 03, 2026 Debian
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Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorydenial of servicesecurity issue

Ubuntu 20.04 LTS Pyasn1 High Risk DoS Vulnerabilities USN-8134-1

Several security issues were fixed in pyasn1.. ========================================================================== Ubuntu Security Notice USN-8134-1 March 30, 2026 pyasn1 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in pyasn1. Software Description: - pyasn1: ASN.1 library for Python Details: It was discovered that pyasn1 could exhaust system resources when attempting to decode a malformed certificate. An attacker could possibly use this to cause a denial of service. (CVE-2026-23490) Kevin Tu discovered that pyasn1 could exhaust system resources via uncontrolled recursion when attempting to decode malicously-crafted certificates. An attacker could possibly use this to cause a denial of service. (CVE-2026-30922) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS pypy-pyasn1 0.4.2-3ubuntu0.20.04.1~esm1 Available with Ubuntu Pro python-pyasn1 0.4.2-3ubuntu0.20.04.1~esm1 Available with Ubuntu Pro python3-pyasn1 0.4.2-3ubuntu0.20.04.1~esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS pypy-pyasn1 0.4.2-3ubuntu0.18.04.1~esm1 Available with Ubuntu Pro python-pyasn1 0.4.2-3ubuntu0.18.04.1~esm1 Available with Ubuntu Pro python3-pyasn1 0.4.2-3ubuntu0.18.04.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS pypy-pyasn1 0.1.9-1ubuntu0.1~esm1 Available with Ubuntu Pro python-pyasn1 0.1.9-1ubuntu0.1~esm1 Available with Ubuntu Pro python3-pyasn1 0.1.9-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 14.04 LTS python-pyasn1 0.1.7-1ubuntu2.1+esm1 Available with Ubuntu Pro python3-pyasn1 0.1.7-1ubuntu2.1+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8134-1 CVE-2026-23490, CVE-2026-30922 . Several security issues fixed in pyasn1 for Ubuntu. Immediate update required to mitigate potential DoS attacks.. pyasn1 security update, ubunutu pyasn1 issues, DoS vulnerability pyasn1, Ubuntu security patch. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Mar 31, 2026 •Critical Ubuntu
172
Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorycriticalDoS

Ubuntu 25.10 pyasn1 Critical Denial of Service Issue USN-8129-1

pyasn1 could be made to consume resources and crash if it received specially crafted input.. ========================================================================== Ubuntu Security Notice USN-8129-1 March 30, 2026 pyasn1 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: pyasn1 could be made to consume resources and crash if it received specially crafted input. Software Description: - pyasn1: ASN.1 library for Python Details: It was discovered that pyasn1 incorrectly handled recursion when decoding ASN.1 data. An attacker could use this issue to cause pyasn1 to consume resources, leading to a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 python3-pyasn1 0.6.1-1ubuntu0.2 Ubuntu 24.04 LTS python3-pyasn1 0.4.8-4ubuntu0.2 Ubuntu 22.04 LTS python3-pyasn1 0.4.8-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8129-1 CVE-2026-30922 Package Information: https://launchpad.net/ubuntu/+source/pyasn1/0.6.1-1ubuntu0.2 https://launchpad.net/ubuntu/+source/pyasn1/0.4.8-4ubuntu0.2 https://launchpad.net/ubuntu/+source/pyasn1/0.4.8-1ubuntu0.2 . Security Notice USN-8129-1 addresses a critical DoS issue in pyasn1 for Ubuntu releases. Update now to protect your system.. Ubuntu Security, pyasn1 DoS, Ubuntu 22.04 security update, Ubuntu 24.04 fix. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Mar 30, 2026 •Critical Ubuntu
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Price Tag 1security advisorydenial of servicecritical

Debian 11 pyasn1 Critical DoS Memory Exhaustion CVE-2026-23490 DLA-4463-1

It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability, which may result in memory exhaustion from malformed OID/RELATIVE-OID with excessive continuation octets. For Debian 11 bullseye, this problem has been fixed in version. Debian LTS Advisory DLA-4463-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Utkarsh Gupta February 01, 2026 https://wiki.debian.org/LTS Package : pyasn1 Version : 0.4.8-1+deb11u1 CVE ID : CVE-2026-23490 Debian Bug : 1125753 It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability, which may result in memory exhaustion from malformed OID/RELATIVE-OID with excessive continuation octets. For Debian 11 bullseye, this problem has been fixed in version 0.4.8-1+deb11u1. We recommend that you upgrade your pyasn1 packages. For the detailed security status of pyasn1 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/pyasn1 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 . Denial of service fix for pyasn1 in Debian 11 addresses critical memory issue from malformed OID.. Debian 11, pyasn1, denial of service, security update, memory exhaustion. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Feb 01, 2026 •Critical Debian LTS
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Ls Advisories Debian Esm H240
Price Tag 1security advisorydenial of servicedebian

Debian pyasn1 Important Denial of Service Fix DSA-6114-1 CVE-2026-23490

It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability, which may result in memory exhaustion from malformed OID/RELATIVE-OID with excessive continuation octets. For the oldstable distribution (bookworm), this problem has been fixed. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6114-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso January 28, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : pyasn1 CVE ID : CVE-2026-23490 Debian Bug : 1125753 It was discovered that pyasn1, a generic ASN.1 library for Python, is prone to a denial of service vulnerability, which may result in memory exhaustion from malformed OID/RELATIVE-OID with excessive continuation octets. For the oldstable distribution (bookworm), this problem has been fixed in version 0.4.8-3+deb12u1. For the stable distribution (trixie), this problem has been fixed in version 0.6.1-1+deb13u1. We recommend that you upgrade your pyasn1 packages. For the detailed security status of pyasn1 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/pyasn1 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. . Denial of service vulnerability in pyasn1 may cause memory exhaustion. Critical updates released for Debian distributions.. pyasn1, denial of service, Debian security. . Severity: Important. LinuxSecurity.com Team

Calendar 2 Jan 28, 2026 •Important Debian
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Ls Advisories Ubuntu Esm H240
Price Tag 1security advisorydenial of servicecritical

Ubuntu 25.10 pyasn1 Critical Denial of Service CVE-2026-23490

pyasn1 could be made to crash if it received specially crafted input.. ========================================================================== Ubuntu Security Notice USN-7975-1 January 22, 2026 pyasn1 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: pyasn1 could be made to crash if it received specially crafted input. Software Description: - pyasn1: ASN.1 library for Python Details: It was discovered that pyasn1 incorrectly handled malformed RELATIVE-OIDs with excessive continuation octets. An attacker could possibly use this issue to cause pyasn1 to consume memory, leading to a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 python3-pyasn1 0.6.1-1ubuntu0.1 Ubuntu 24.04 LTS python3-pyasn1 0.4.8-4ubuntu0.1 Ubuntu 22.04 LTS python3-pyasn1 0.4.8-1ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7975-1 CVE-2026-23490 Package Information: https://launchpad.net/ubuntu/+source/pyasn1/0.6.1-1ubuntu0.1 https://launchpad.net/ubuntu/+source/pyasn1/0.4.8-4ubuntu0.1 https://launchpad.net/ubuntu/+source/pyasn1/0.4.8-1ubuntu0.1 . Ensure your Ubuntu system is secured by updating pyasn1 to mitigate denial of service vulnerabilities caused by malformed inputs.. Python ASN.1 Library, Ubuntu Security Notice, Denial of Service, pyasn1 Update. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Jan 22, 2026 •Critical Ubuntu
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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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