========================================================================== Ubuntu Security Notice USN-8319-1 May 27, 2026
libgcrypt20 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in Libgcrypt. Software Description: - libgcrypt20: LGPL Crypto library Details: It was discovered that Libgcrypt incorrectly handled crafted ECDH ciphertext. An attacker could possibly use this issue to cause Libgcrypt to crash, resulting in a denial of service. (CVE-2026-41989) It was discovered that Libgcrypt incorrectly handled Dilithium signing. An attacker could possibly use this issue to cause Libgcrypt to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-41990) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS libgcrypt20 1.12.0-2ubuntu0.1 Ubuntu 25.10 libgcrypt20 1.11.0-7ubuntu0.1 Ubuntu 24.04 LTS libgcrypt20 1.10.3-2ubuntu0.1 Ubuntu 22.04 LTS libgcrypt20 1.9.4-3ubuntu3.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8319-1 CVE-2026-41989, CVE-2026-41990 Package Information: https://launchpad.net/ubuntu/+source/libgcrypt20/1.12.0-2ubuntu0.1 https://launchpad.net/ubuntu/+source/libgcrypt20/1.11.0-7ubuntu0.1 https://launchpad.net/ubuntu/+source/libgcrypt20/1.10.3-2ubuntu0.1 https://launchpad.net/ubuntu/+source/libgcrypt20/1.9.4-3ubuntu3.2
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