Common Problems

Amazon Linux 2 — memcached — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — memcached — multiple vulnerabilities (2 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 ALAS2MEMCACHED1.5-2025-001 Related CVEs: CVE-2021-37519 CVE-2018-1000115 Upstream summary: Buffer Overflow vulnerability in authfile.c memcached 1.6.9 allows attackers to cause a denial of service via crafted authenticattion file. (CVE-2021-37519) Table of contents […]

Read more
Oracle Linux 8 — polkit — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — polkit — vulnerability — patch and remediation guide (ELSA-2022-1546)

🟡 Medium   ⏱ 10–30 min  Last verified: 27 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1546 Related CVEs: CVE-2021-4115 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Oracle Linux 8 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2020-1341)

🔴 Critical   ⏱ 15–90 min  Last verified: 27 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1341 Related CVEs: CVE-2020-6819 CVE-2020-6820 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
Oracle Linux 8 — ELSA-2022-9073-1: nodejs:16 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ELSA-2022-9073-1: nodejs:16 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-9073-1)

🟡 Medium   ⏱ 10–30 min  Last verified: 26 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9073-1 Related CVEs: CVE-2021-44906 CVE-2021-44532 CVE-2021-44533 CVE-2022-43548 CVE-2022-21824 CVE-2021-44531 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
Common Problems 117562

Ubuntu 20.04 LTS Proxy Misconfiguration Breaks apt and curl

🟡 Medium   ⏱ 5–30 min  Last verified: 26 March 2021 Affected versions: 20.04 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 & […]

Read more
Common Problems 113617

Windows Server 2012 R2 — Express Update Downloads Saturate WAN and Delay Patch Completion — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 26 March 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

Read more
Alpine Linux edge — vips — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — vips — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 8.9.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — vips 8.9.0-r0 Related CVEs: CVE-2020-20739 CVE-2019-17534 Upstream summary: Alpine community repository for vedge ships vips 8.9.0-r0 which addresses CVE-2020-20739. Table of contents Symptom & Impact […]

Read more
Gentoo Linux — net-libs/libslirp — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-libs/libslirp — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-44 Related CVEs: CVE-2021-3592 CVE-2021-3593 CVE-2021-3594 CVE-2021-3595 Upstream summary: Multiple vulnerabilities have been discovered in libslirp. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment […]

Read more
Amazon Linux 2 — mariadb — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — mariadb — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2MARIADB10.5-2023-001 Related CVEs: CVE-2021-27928 CVE-2021-2372 CVE-2021-2389 CVE-2021-35604 CVE-2021-46657 CVE-2021-46658 CVE-2021-46659 CVE-2021-46661  +12 more Upstream summary: A remote code execution issue was discovered in MariaDB 10.2 before 10.2.37, 10.3 before 10.3.28, […]

Read more
openSUSE Tumbleweed — python36-cryptography — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-cryptography — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0349-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-36242 CVE-2020-25659 Upstream summary: In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in […]

Read more
CHAT