Common Problems

Oracle Linux 8 — liblouis — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — liblouis — security and stability fixes — required update (ELSA-2020-1708)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1708 Related CVEs: CVE-2018-11685 CVE-2018-11684 CVE-2018-11577 CVE-2018-12085 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Common Problems 115567

Kernel Update Installed but Old Kernel Keeps Booting

🟡 Medium   ⏱ 5–30 min  Last verified: 4 March 2021 📖 ~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 & Cross-Refs References & Further […]

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FreeBSD 12 — py27-yaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py27-yaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 March 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-yaml — FullLoader (still) exploitable for arbitrary command execution Related CVEs: CVE-2017-18342 CVE-2020-1747 Upstream summary: Riccardo Schirone (https://github.com/ret2libc) reports: In FullLoader python/object/new constructor, implemented by construct_python_object_apply, has support for setting […]

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Common Problems 115440

Stale PID File Prevents Service Startup

🟡 Medium   ⏱ 5–30 min  Last verified: 4 March 2021 📖 ~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 & Cross-Refs References & Further […]

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Ubuntu 18.04 — linux-gke-5.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-gke-5.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4713-2 Related CVEs: CVE-2020-28374 CVE-2020-16119 CVE-2020-16120 CVE-2020-14386 CVE-2020-12771 CVE-2019-12380 CVE-2019-16089 CVE-2019-19036  +12 more Upstream summary: It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient […]

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Common Problems 113549

Windows Server 2012 R2 – Security event log overflow causing dropped audit events – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 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 […]

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openSUSE Tumbleweed — abcm2ps — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — abcm2ps — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0100-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-32434 CVE-2021-32435 Upstream summary: abcm2ps v8.14.11 was discovered to contain an out-of-bounds read in the function calculate_beam at draw.c. Table of contents Symptom & Impact […]

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Ubuntu 18.04 — wayland — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — wayland — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5614-1 Related CVEs: CVE-2021-3782 Upstream summary: It was discovered that Wayland incorrectly handled reference counting certain objects. An attacker could use this issue to cause Wayland to crash, resulting in […]

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SLES 15 — libproxy1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libproxy1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2020:518-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25219 CVE-2020-26154 CVE-2012-4504 Upstream summary: url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response […]

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Debian 10 — libzstd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libzstd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 March 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-24031 CVE-2021-24032 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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