Linux

Common Problems 119954

Debian 12 APT Lock Contention During Package Operations

🟡 Medium   ⏱ 5–30 min  Last verified: 25 September 2023 Affected versions: Debian 12 📖 ~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 & […]

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Common Problems 117038

Ubuntu 22.04 LTS – UFW blocks application traffic unexpectedly – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 25 September 2023 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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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Debian 12 — exactimage — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — exactimage — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1438 CVE-2013-1441 CVE-2015-3885 CVE-2015-8366 Upstream summary: Unspecified vulnerability in dcraw 0.8.x through 0.8.9, as used in libraw, ufraw, shotwell, and other products, allows context-dependent attackers to cause a […]

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openSUSE Tumbleweed — python39-pycryptodome — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python39-pycryptodome — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-RU-2024:1829-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-52323 Upstream summary: PyCryptodome and pycryptodomex before 3.19.1 allow side-channel leakage for OAEP decryption, exploitable for a Manger attack. Table of contents Symptom & Impact […]

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Gentoo Linux — sys-libs/ncurses-compat — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-libs/ncurses-compat — multiple vulnerabilities (2 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-202408-19 Related CVEs: CVE-2022-29458 CVE-2023-29491 Upstream summary: Multiple vulnerabilities have been discovered in ncurses. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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Debian 12 — libmodule-signature-perl — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libmodule-signature-perl — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2145 CVE-2015-3406 CVE-2015-3407 CVE-2015-3408 CVE-2015-3409 Upstream summary: The cpansign verify functionality in the Module::Signature module before 0.72 for Perl allows attackers to bypass the signature check and execute […]

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Debian 12 — crossfire-maps — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — crossfire-maps — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4908 Upstream summary: maps/Info/combine.pl in CrossFire crossfire-maps 1.11.0 allows local users to overwrite arbitrary files via a symlink attack on a temporary file. Table of contents Symptom & […]

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Debian 12 — munin — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — munin — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2103 CVE-2012-2104 CVE-2012-2147 CVE-2012-3512 CVE-2012-3513 CVE-2012-4678 CVE-2013-6048 CVE-2013-6359  +1 more Upstream summary: The qmailscan plugin for Munin 1.4.5 allows local users to overwrite arbitrary files via a symlink […]

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Alpine Linux 3.18 — cjson — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — cjson — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.7.17-r0 📖 ~4 min read  •  Source: Alpine secdb entry — cjson 1.7.17-r0 Related CVEs: CVE-2023-50472 CVE-2023-50471 Upstream summary: Alpine main repository for vv3.18 ships cjson 1.7.17-r0 which addresses CVE-2023-50472. Table of contents Symptom & Impact […]

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Cómo actualizar a Ubuntu 20.04 Focal Fossa — step-by-step Linux tutorial on Progressive Robot

Cómo actualizar a Ubuntu 20.04 Focal Fossa

La última versión de Soporte a largo plazo (LTS) del sistema operativo Ubuntu, Ubuntu 20.04 (Focal Fossa), fue lanzada el 23 de abril del 2020. Esta guía explicará cómo actualizar un sistema Ubuntu con versión 18.04 o posterior a Ubuntu 20.04. <$>[warning] Advertencia:…

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