https://ubuntu.com/security/notices/rss.xmlRecent content on Ubuntu security notices2026 Canonical Ltd. Ubuntu and Canonical are registered trademarks of Canonical Ltd.http://www.rssboard.org/rss-specificationFeedgenSat, 04 Apr 2026 15:15:14 +0000https://ubuntu.com/security/notices/USN-8148-3Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Netfilter; - Network traffic control; (CVE-2026-23060, CVE-2026-23074, CVE-2026-23111) https://ubuntu.com/security/notices/USN-8148-3Thu, 02 Apr 2026 20:58:01 +0000https://ubuntu.com/security/notices/USN-8148-2Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Netfilter; - Network traffic control; (CVE-2026-23060, CVE-2026-23074, CVE-2026-23111) https://ubuntu.com/security/notices/USN-8148-2Thu, 02 Apr 2026 20:45:55 +0000https://ubuntu.com/security/notices/USN-8145-2Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Cryptographic API; - UDF file system; - NFC subsystem; - Network traffic control; (CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060, CVE-2026-23074) https://ubuntu.com/security/notices/USN-8145-2Thu, 02 Apr 2026 20:37:36 +0000https://ubuntu.com/security/notices/USN-8143-2Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - GPU drivers; - BTRFS file system; - GFS2 file system; - UDF file system; - NFC subsystem; - Network traffic control; (CVE-2021-47142, CVE-2021-47145, CVE-2021-47254, CVE-2024-46777, CVE-2025-21735, CVE-2026-23060, CVE-2026-23074) https://ubuntu.com/security/notices/USN-8143-2Thu, 02 Apr 2026 20:30:36 +0000https://ubuntu.com/security/notices/USN-8146-1Daniel Novomeský discovered that libjxl did not properly manage memory when decoding certain files. An attacker could use this issue to cause libjxl to crash, resulting in denial of service, or possibly execute arbitrary code.https://ubuntu.com/security/notices/USN-8146-1Thu, 02 Apr 2026 19:09:19 +0000https://ubuntu.com/security/notices/USN-8149-1Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Netfilter; - Network traffic control; (CVE-2026-23060, CVE-2026-23074, CVE-2026-23111) https://ubuntu.com/security/notices/USN-8149-1Thu, 02 Apr 2026 18:31:30 +0000https://ubuntu.com/security/notices/USN-8148-1Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - Netfilter; - Network traffic control; (CVE-2026-23060, CVE-2026-23074, CVE-2026-23111) https://ubuntu.com/security/notices/USN-8148-1Thu, 02 Apr 2026 18:01:51 +0000https://ubuntu.com/security/notices/USN-8145-1 Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Cryptographic API; - UDF file system; - NFC subsystem; - Network traffic control; (CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060, CVE-2026-23074) https://ubuntu.com/security/notices/USN-8145-1Thu, 02 Apr 2026 14:06:57 +0000https://ubuntu.com/security/notices/USN-8144-1It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker could possibly use this issue to gain unintended access to user sessions.https://ubuntu.com/security/notices/USN-8144-1Thu, 02 Apr 2026 08:22:52 +0000https://ubuntu.com/security/notices/USN-8140-1Alberto Garcia, Francisco Oca and Suleman Ali discovered that Cairo did not properly manage memory. An attacker could possibly use this issue to cause Cairo to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2017-9814) It was discovered that Cairo incorrectly handled certain angle values when drawing arcs. An attacker could possibly use this issue to cause Cairo to crash, resulting in a denial of service. (CVE-2019-6461) It was discovered that Cairo incorrectly handled certain calculations when drawing arcs. An attacker could possibly use this issue to cause Cairo to consume resources, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2019-6462) Stephan Bergmann discovered that Cairo incorrectly managed memory during image composition. An attacker could use this issue to cause Cairo to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-35492)https://ubuntu.com/security/notices/USN-8140-1Thu, 02 Apr 2026 07:27:21 +0000