ubuntu

Ubuntu 20.04 — firejail — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — firejail — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5141-1 Related CVEs: CVE-2021-26910 Upstream summary: Roman Fiedler discovered that a race condition existed in Firejail when using OverlayFS to prevent writes to the underlying file system. A local attacker […]

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Ubuntu 20.04 — python-py — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — python-py — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5138-1 Related CVEs: CVE-2020-29651 Upstream summary: The py.path.svnwc component of py (aka python-py) through v1.9.0 contains a regular expression with an ambiguous subpattern that is susceptible to catastrophic backtracing. This […]

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Ubuntu 18.04 — pyasn1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pyasn1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8134-1 Related CVEs: CVE-2026-30922 CVE-2026-23490 Upstream summary: It was discovered that pyasn1 could exhaust system resources when attempting to decode a malformed certificate. An attacker could possibly use this to […]

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Ubuntu 18.04 — libapreq2 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libapreq2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4558-1 Related CVEs: CVE-2019-12412 Upstream summary: It was discovered that libapreq2 did not properly sanitize the Content-Type field in certain, crafted HTTP requests. An attacker could use this vulnerability to […]

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Ubuntu 18.04 — linux-aws-5.3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-aws-5.3 — multiple vulnerabilities (20 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-4489-1 Related CVEs: CVE-2020-14386 CVE-2020-14356 CVE-2020-12655 CVE-2020-12771 CVE-2020-15393 CVE-2020-24394 CVE-2019-16089 CVE-2019-19462  +12 more Upstream summary: Or Cohen discovered that the AF_PACKET implementation in the Linux kernel did not properly perform […]

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Ubuntu 20.04 — simgear — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — simgear — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7965-1 Related CVEs: CVE-2025-0781 Upstream summary: It was discovered that SimGear could be made to bypass the sandboxing of Nasal scripts. An attacker could possibly use this issue to execute […]

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Ubuntu 20.04 — adsys — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — adsys — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8089-3 Related CVEs: CVE-2023-3978 CVE-2025-47911 CVE-2022-41723 CVE-2025-58190 CVE-2021-33194 CVE-2022-27664 CVE-2025-22872 CVE-2024-45338 Upstream summary: USN-8089-1 fixed vulnerabilities in Go Networking. This update provides the corresponding update to code vendored in LXD, […]

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Ubuntu 18.04 — linux-oracle-5.3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-oracle-5.3 — multiple vulnerabilities (20 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-4440-1 Related CVEs: CVE-2019-16089 CVE-2019-19462 CVE-2019-20810 CVE-2019-20908 CVE-2020-10732 CVE-2020-10757 CVE-2020-10766 CVE-2020-10767  +12 more Upstream summary: It was discovered that the network block device (nbd) implementation in the Linux kernel did […]

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Ubuntu 18.04 — git-lfs — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — git-lfs — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7977-1 Related CVEs: CVE-2024-53263 CVE-2025-26625 Upstream summary: Ryota K discovered that Git LFS may leak login credentials in certain instances due to failing to check for URL-encoded characters. An attacker […]

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Ubuntu 16.04 — jq — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — jq — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8202-1 Related CVEs: CVE-2026-39956 CVE-2026-33947 CVE-2026-39979 CVE-2026-33948 CVE-2026-40164 CVE-2026-32316 CVE-2024-23337 CVE-2025-48060  +1 more Upstream summary: It was discovered that jq did not correctly handle certain string concatenations. An attacker could […]

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