Linux

Oracle Linux 9 — php:8.3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — php:8.3 — vulnerability — patch and remediation guide (ELSA-2026-1429)

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-1429 Related CVEs: CVE-2025-14177 CVE-2025-14178 CVE-2025-14180 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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CentOS Stream 9 — qt5-qt3d — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — qt5-qt3d — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2025 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:20963 Related CVEs: CVE-2025-11277 Upstream summary: Qt 3D provides functionality for near-realtime simulation systems with support for 2D and 3D rendering in both Qt C++ and Qt Quick applications). Security Fix(es): […]

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SLES 15 — net-snmp — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — net-snmp — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:0668 (see also SUSE bugzilla) Related CVEs: CVE-2025-68615 CVE-2018-18065 CVE-2020-15862 CVE-2015-5621 CVE-2022-44792 CVE-2022-44793 CVE-2022-24805 CVE-2022-24806  +8 more Upstream summary: net-snmp is a SNMP application library, tools and daemon. Prior to versions 5.9.5 […]

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openSUSE Leap 15.6 — python311-pydantic — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — python311-pydantic — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2025:0310-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-3772 Upstream summary: Regular expression denial of service in Pydanic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a […]

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How to Install and Configure Dovecot IMAP Server on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install and Configure Dovecot IMAP Server on RHEL 9

Dovecot is a fast, secure, and easy-to-configure IMAP and POP3 server that works seamlessly alongside Postfix on RHEL 9. Once Postfix is delivering incoming mail to a user’s Maildir, Dovecot allows mail clients such as Thunderbird or Outlook to retrieve those messages over IMAP or POP3 — with optional SSL/TLS encryption for both protocols. This […]

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Common Problems 114080

RHEL 10 – kdump does not capture vmcore on panic because crashkernel is mis-sized – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 7 August 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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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AlmaLinux 9 — skopeo — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — skopeo — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:3340 Related CVEs: CVE-2025-61726 CVE-2025-61729 CVE-2025-68121 CVE-2024-34156 CVE-2024-1394 CVE-2025-58183 CVE-2025-22871 CVE-2025-27144  +12 more Upstream summary: The skopeo command lets you inspect images from container image registries, get images and image layers, and […]

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Debian 11 — libplack-middleware-session-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libplack-middleware-session-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 August 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-10031 CVE-2014-125112 CVE-2025-40923 Upstream summary: Plack-Middleware-Session versions before 0.17 may be vulnerable to HMAC comparison timing attacks Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 11 — libsodium — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libsodium — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 August 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-69277 Upstream summary: libsodium before ad3004e, in atypical use cases involving certain custom cryptography or untrusted data to crypto_core_ed25519_is_valid_point, mishandles checks for whether an elliptic curve point is […]

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Amazon Linux 2023 — kernel-livepatch-6.1.128-136.201 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.128-136.201 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2025-043 Related CVEs: CVE-2025-21703 CVE-2025-21753 CVE-2025-21796 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (CVE-2025-21703) Table of contents Symptom & Impact […]

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CHAT