How To Create a New Sudo-enabled User on Rocky Linux
Learn how to create a new user with sudo privileges on Rocky Linux, including secure configuration, group assignment, and permission verification.
How to Configure Podman Compose on RHEL 9
Podman Compose (podman-compose) is a Python implementation of the Docker Compose specification that uses Podman instead of Docker. It allows running existing docker-compose.yml / compose.yaml files with Podman’s rootless, daemon-less container engine. For teams migrating from Docker to Podman, podman-compose provides a familiar workflow with minimal configuration changes. Alternatively, Podman 4.0+ includes a native podman […]
AlmaLinux 9 — python-lxml — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2022:8226 Related CVEs: CVE-2022-2309 Upstream summary: lxml is an XML processing library providing access to libxml2 and libxslt libraries using the Python ElementTree API. Security Fix(es): * lxml: NULL Pointer Dereference in […]
Oracle Linux 9 — jackson-annotations, jackson-core, jackson-databind, jackson-jaxrs-providers, and jackson-modules-base — vulnerability — p… (ELSA-2025-12280)
🟠 High ⏱ 15–60 min Last verified: 4 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2025-12280 Related CVEs: CVE-2025-52999 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Ubuntu 20.04 LTS – high CPU from kswapd0 due to memory pressure
🟠 High ⏱ 5–30 min Last verified: 4 April 2023 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]
Debian 10 — xz-utils — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 4 April 2023 Affected versions: Debian 10 (buster) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2022-1271 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Ubuntu 20.04 — plantuml — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 4 April 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7353-1 Related CVEs: CVE-2022-1231 Upstream summary: Tobias S. Fink discovered that PlantUML was susceptible to cross-site scripting attacks (XSS) in instances where SVG images were rendered. An attacker could possibly […]
SLES 15 — ruby2.5-rubygem-globalid — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 4 April 2023 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2023:0328-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-22799 Upstream summary: A ReDoS based DoS vulnerability in the GlobalID <1.0.1 which could allow an attacker supplying a carefully crafted input can cause the […]
SLES 15 — procps — multiple vulnerabilities (6 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 4 April 2023 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2019:695-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-1122 CVE-2018-1123 CVE-2018-1124 CVE-2018-1125 CVE-2018-1126 CVE-2023-4016 Upstream summary: procps-ng before version 3.3.15 is vulnerable to a local privilege escalation in top. If a user runs […]
Oracle Linux 8 — cri-o — vulnerability — patch and remediation guide (ELSA-2022-9228)
🟠 High ⏱ 15–60 min Last verified: 4 April 2023 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-9228 Related CVEs: CVE-2022-0811 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
