Linux

SLES 12 — libcaca0 — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libcaca0 — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 16 July 2022 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:0754-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-30498 CVE-2021-30499 CVE-2021-3410 CVE-2022-0856 CVE-2018-20547 CVE-2018-20544 CVE-2018-20545 CVE-2018-20546  +2 more Upstream summary: A flaw was found in libcaca. A heap buffer overflow in export.c in […]

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Debian 11 — xorg-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xorg-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 16 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0745 CVE-2006-1526 CVE-2006-4447 CVE-2006-6101 CVE-2006-6102 CVE-2006-6103 CVE-2007-1003 CVE-2007-2437  +12 more Upstream summary: X.Org server (xorg-server) 1.0.0 and later, X11R6.9.0, and X11R7.0 inadvertently treats the address of the geteuid […]

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Debian 11 — dovecot — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dovecot — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 16 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0730 CVE-2006-2414 CVE-2006-5973 CVE-2007-2231 CVE-2007-4211 CVE-2007-6598 CVE-2008-1199 CVE-2008-1218  +12 more Upstream summary: Multiple unspecified vulnerabilities in Dovecot before 1.0beta3 allow remote attackers to cause a denial of service […]

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How to Install Icinga2 on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Icinga2 on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install icinga2 on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and the resulting […]

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Amazon Linux 2 — libguestfs-winsupport — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libguestfs-winsupport — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2332 Related CVEs: CVE-2022-30783 CVE-2022-30784 CVE-2022-30785 CVE-2022-30786 CVE-2022-30787 CVE-2022-30788 CVE-2022-30789 CVE-2019-9755 Upstream summary: An invalid return code in fuse_kern_mount enables intercepting of libfuse-lite protocol traffic between NTFS-3G and the kernel […]

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Common Problems 116903

Ubuntu 22.04 LTS – unattended-upgrades causes sustained CPU usage – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 July 2022 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Oracle Linux 8 — libexif security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libexif security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4766)

🟡 Medium   ⏱ 10–30 min  Last verified: 15 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4766 Related CVEs: CVE-2020-12767 CVE-2020-0182 CVE-2020-0198 CVE-2019-9278 CVE-2020-0181 CVE-2020-13113 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 120688

Debian 11 NFS Mount Timeout on Application Nodes

🟠 High   ⏱ 5–30 min  Last verified: 15 July 2022 Affected versions: Debian 11 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Debian 11 — gcc-3.3 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gcc-3.3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 15 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2000-1219 Upstream summary: The -ftrapv compiler option in gcc and g++ 3.3.3 and earlier does not handle all types of integer overflows, which may leave applications vulnerable to […]

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Common Problems 116918

Ubuntu 22.04 LTS – apt update fails with missing GPG key – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 July 2022 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related […]

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