Common Problems

Common Problems 118467

Ubuntu 16.04 LTS high CPU usage by kworker threads

🟡 Medium   ⏱ 5–30 min  Last verified: 3 February 2020 📖 ~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 […]

Read more
FreeBSD 12 — atril-lite — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — atril-lite — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: evince and atril — command injection vulnerability in CBT handler Related CVEs: CVE-2017-1000083 Upstream summary: GNOME reports: The comic book backend in evince 3.24.0 (and earlier) is vulnerable to a […]

Read more
Debian 10 — apache-log4j1.2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — apache-log4j1.2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 February 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17571 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
openSUSE Tumbleweed — libmad0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libmad0 — 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-2022:10169-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-8373 CVE-2017-8374 Upstream summary: The mad_layer_III function in layer3.c in Underbit MAD libmad 0.15.1b allows remote attackers to cause a denial of service (heap-based buffer […]

Read more
SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 February 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:2053-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-16779 Upstream summary: In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by […]

Read more
Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide (ELSA-2020-0201)

🟠 High   ⏱ 15–60 min  Last verified: 3 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-0201 Related CVEs: CVE-2019-17626 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 118530

Ubuntu 16.04 failed to fetch repository indexes

🟡 Medium   ⏱ 5–30 min  Last verified: 2 February 2020 📖 ~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 […]

Read more
FreeBSD 12 — lesstif — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — lesstif — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xpm — image decoding vulnerabilities Related CVEs: CVE-2004-0687 CVE-2004-0688 Upstream summary: Chris Evans discovered several vulnerabilities in the libXpm image decoder: A stack-based buffer overflow in xpmParseColors An integer overflow […]

Read more
Common Problems 115526

RHEL 7 firewalld Zone Mismatch on Primary NIC

🟡 Medium   ⏱ 5–30 min  Last verified: 2 February 2020 Affected versions: RHEL 7 📖 ~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
CHAT