Security Hardening

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

Debian 11 — shapelib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-0699 Upstream summary: A double-free condition exists in contrib/shpsort.c of shapelib 1.5.0 and older releases. This issue may allow an attacker to cause a denial of service or […]

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Debian 13 — po4a — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — po4a — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-4462 Upstream summary: lib/Locale/Po4a/Po.pm in po4a before 0.32 allows local users to overwrite arbitrary files via a symlink attack on the gettextization.failed.po temporary file. Table of contents Symptom […]

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Debian 12 — libgepub — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libgepub — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-6196 Upstream summary: A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, […]

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Debian 13 — gnupg2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — gnupg2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-2023 CVE-2006-3082 CVE-2006-3746 CVE-2006-6169 CVE-2006-6235 CVE-2007-1263 CVE-2008-1530 CVE-2010-2547  +12 more Upstream summary: The send_pinentry_environment function in asshelp.c in gpg2 on SUSE Linux 9.3 does not properly handle certain […]

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Debian 12 — dosbox — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — dosbox — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-6328 CVE-2019-12594 CVE-2019-7165 Upstream summary: DOSBox 0.72 and earlier allows local users to obtain access to the filesystem on the host operating system via the mount command. NOTE: […]

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Debian 11 — gdal — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gdal — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17545 CVE-2019-17546 CVE-2019-25050 CVE-2021-45943 CVE-2025-29480 CVE-2026-4738 CVE-2026-8084 CVE-2026-8086  +2 more Upstream summary: GDAL through 3.0.1 has a poolDestroy double free in OGRExpatRealloc in ogr/ogr_expat.cpp when the 10MB threshold […]

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Debian 12 — udfclient — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — udfclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-8305 Upstream summary: The UDFclient (before 0.8.8) custom strlcpy implementation has a buffer overflow. UDFclient's strlcpy is used only on systems with a C library (e.g., glibc) that […]

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Debian 13 — libjbcrypt-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libjbcrypt-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-0886 Upstream summary: Integer overflow in the crypt_raw method in the key-stretching implementation in jBCrypt before 0.4 makes it easier for remote attackers to determine cleartext values of password […]

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Debian 12 — rzip — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — rzip — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-8364 Upstream summary: The read_buf function in stream.c in rzip 2.1 allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly […]

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