Common Problems

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

Amazon Linux 2 — postgresql — 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 ALAS2-2026-3193 Related CVEs: CVE-2026-2005 CVE-2026-2003 CVE-2026-2004 CVE-2026-2006 CVE-2012-0868 CVE-2017-7484 CVE-2019-10130 CVE-2024-21096  +12 more Upstream summary: Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as […]

Read more
Debian 13 — lxml — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — lxml — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-3146 CVE-2018-19787 CVE-2020-27783 CVE-2021-28957 CVE-2021-43818 CVE-2022-2309 CVE-2026-41066 Upstream summary: Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) […]

Read more
Debian 12 — cmake — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — cmake — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3560 CVE-2009-3720 CVE-2025-9301 Upstream summary: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause […]

Read more
Red Hat Enterprise Linux 8 — dovecot — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 8 — dovecot — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 8 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:19455 Related CVEs: CVE-2025-59032 CVE-2026-27857 CVE-2026-27858 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

Read more
Debian 11 — node-ws — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-ws — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10518 CVE-2016-10542 CVE-2021-32640 CVE-2024-37890 CVE-2026-45736 Upstream summary: A vulnerability was found in the ping functionality of the ws module before 1.0.0 which allowed clients to allocate memory by […]

Read more
Ubuntu 20.04 — snapd — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — snapd — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8102-1 Related CVEs: CVE-2026-3888 CVE-2024-1724 CVE-2024-29068 CVE-2024-29069 CVE-2023-1523 CVE-2022-3328 https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1961365 https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1961791  +7 more Upstream summary: Qualys discovered that snapd incorrectly handled certain operations in the snap's private /tmp directory. If […]

Read more
Ubuntu 22.04 — protobuf — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — protobuf — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8063-1 Related CVEs: CVE-2026-0994 CVE-2024-7254 CVE-2025-4565 CVE-2021-22569 CVE-2021-22570 CVE-2022-1941 Upstream summary: It was discovered that Protocol Buffers incorrectly handled recursion when the Python google.protobuf.json_format.ParseDict() function is being used. An attacker […]

Read more
Oracle Linux 9 — java-17-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — java-17-openjdk — vulnerability — patch and remediation guide (ELSA-2025-0422)

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-0422 Related CVEs: CVE-2025-21502 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
Common Problems 115971

Ubuntu 26.04 LTS – netplan apply fails and network does not come up – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 May 2026 Affected versions: Ubuntu 26.04 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
Oracle Linux 8 — rsync — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — rsync — vulnerability — patch and remediation guide (ELSA-2026-17481)

🟠 High   ⏱ 15–60 min  Last verified: 29 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-17481 Related CVEs: CVE-2026-41035 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
CHAT