Package Management

Ubuntu 18.04 — libzstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libzstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4760-1 Related CVEs: CVE-2021-24031 CVE-2021-24032 CVE-2019-11922 Upstream summary: It was discovered that libzstd incorrectly handled file permissions. A local attacker could possibly use this issue to access certain files, contrary […]

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Ubuntu 22.04 — libnet-cidr-perl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libnet-cidr-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8110-1 Related CVEs: CVE-2021-4456 Upstream summary: Dave Rolsky discovered that Net-CIDR did not properly sanitize IP addresses. An attacker could possibly use this to bypass IP-based restrictions. Table of contents […]

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Ubuntu 24.04 — rustc-1.82 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — rustc-1.82 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8168-1 Related CVEs: CVE-2026-33056 Upstream summary: It was discovered that tar-rs embedded in rustc incorrectly handled symlinks when unpacking a tar archive. If a user or automated system were tricked […]

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Ubuntu 14.04 — libytnef — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libytnef — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3667-1 Related CVEs: CVE-2017-12141 CVE-2017-9058 CVE-2017-9146 CVE-2017-9471 CVE-2017-9473 CVE-2017-6298 CVE-2017-6299 CVE-2017-6300  +9 more Upstream summary: It was discovered that libytnef incorrectly handled certain files. An attacker could possibly use this […]

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Ubuntu 16.04 — graphicsmagick — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — graphicsmagick — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5974-1 Related CVEs: CVE-2018-20184 CVE-2018-20189 CVE-2018-5685 CVE-2018-9018 CVE-2019-11006 CVE-2020-12672 CVE-2022-1270 CVE-2019-12921  +12 more Upstream summary: It was discovered that GraphicsMagick was not properly performing bounds checks when processing TGA image […]

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Ubuntu 22.04 — evolution-data-server — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — evolution-data-server — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8055-1 Related CVEs: CVE-2026-2604 Upstream summary: It was discovered that Evolution Data Server incorrectly handled removing local cache files. An attacker could possibly use this issue to cause Evolution Data […]

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Ubuntu 20.04 — privoxy — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — privoxy — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5826-1 Related CVEs: CVE-2021-44540 CVE-2021-44543 CVE-2020-35502 CVE-2021-20209 CVE-2021-20210 CVE-2021-20211 CVE-2021-20212 CVE-2021-20213  +8 more Upstream summary: Joshua Rogers discovered that Privoxy incorrectly handled memory allocation. An attacker could possibly use this […]

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Ubuntu 18.04 — perl — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — perl — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6112-1 Related CVEs: CVE-2023-31484 CVE-2020-16156 CVE-2020-10543 CVE-2020-10878 CVE-2020-12723 CVE-2018-18311 CVE-2018-18312 CVE-2018-18313  +2 more Upstream summary: It was discovered that Perl was not properly verifying TLS certificates when using CPAN together […]

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Ubuntu 18.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4617-1 Related CVEs: CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2020-25653 Upstream summary: Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local attacker could possibly use this issue to […]

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Ubuntu 20.04 — nvidia-graphics-drivers-390 — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nvidia-graphics-drivers-390 — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5547-1 Related CVEs: CVE-2022-31607 CVE-2022-31608 CVE-2022-31615 CVE-2021-1093 CVE-2021-1094 CVE-2021-1095 CVE-2021-1076 CVE-2021-1077  +6 more Upstream summary: Le Wu discovered that the NVIDIA graphics drivers did not properly perform input validation in […]

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