Linux

Ubuntu 20.04 — olm — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — olm — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 November 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5194-1 Related CVEs: CVE-2021-34813 Upstream summary: Denis Kasak discovered that Olm was not verifying the length of input being processed by the olm_pk_decrypt module, which introduced a stack-based buffer overflow […]

Read more
SLES 15 — caribou — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — caribou — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 November 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:1943-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-3567 Upstream summary: A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking […]

Read more
Oracle Linux 8 — python3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python3 — vulnerability — patch and remediation guide (ELSA-2021-4399)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4399 Related CVEs: CVE-2021-3426 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 — curl — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — curl — vulnerability — patch and remediation guide (ELSA-2021-4059)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4059 Related CVEs: CVE-2021-22947 CVE-2021-22946 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
Gentoo Linux — net-proxy/privoxy — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-proxy/privoxy — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-16 Related CVEs: CVE-2020-35502 CVE-2021-20209 CVE-2021-20210 CVE-2021-20211 CVE-2021-20212 CVE-2021-20213 CVE-2021-20214 CVE-2021-20215  +7 more Upstream summary: Multiple vulnerabilities have been discovered in privoxy. Please review the CVE identifiers referenced below for details. Table […]

Read more
Como Instalar o Nginx no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar o Nginx no Ubuntu 20.04

O Nginx é um dos servidores Web mais populares no mundo e é responsável por hospedar alguns dos sites de maior tráfego na Internet. Ele é uma escolha leve que pode ser usado como servidor web ou proxy reverso. Neste guia, vamos discutir como instalar…

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

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-0825)

🟠 High   ⏱ 15–60 min  Last verified: 1 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0825 Related CVEs: CVE-2022-0516 CVE-2022-0435 CVE-2022-0847 CVE-2022-22942 CVE-2022-0492 CVE-2021-4154 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
AlmaLinux 8 — atkmm — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — atkmm — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1586 Related CVEs: CVE-2019-13012 CVE-2020-13543 CVE-2020-13584 CVE-2020-16125 CVE-2020-9948 CVE-2020-9951 CVE-2020-9983 CVE-2021-1817  +4 more Upstream summary: GNOME is the default desktop environment of AlmaLinux. The following packages have been upgraded to a later […]

Read more
Common Problems 121603

Debian 9: Docker daemon fails after kernel or cgroup changes

🟠 High   ⏱ 5–30 min  Last verified: 1 November 2021 Affected versions: Debian 9 📖 ~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