Aggregator

USN-8085-1: .NET vulnerabilities

Ubuntu Security Advisories
1 week 2 days ago
It was discovered that the .NET Microsoft.Bcl.Memory NuGet package did not properly handle certain malformed Base64Url encoded input. An attacker could possibly use this issue to cause .NET to crash, resulting in a denial of service. This issue only affected .NET 9.0 and .NET 10.0. (CVE-2026-26127) Bartłomiej Dach discovered that .NET's SignalR server component did not properly manage resource consumption when processing certain messages. An attacker could possibly use this issue to exhaust internal buffers, resulting in a denial of service. (CVE-2026-26130)

USN-8084-1: curl vulnerabilities

Ubuntu Security Advisories
1 week 2 days ago
Zhicheng Chen discovered that curl could incorrectly reuse the wrong connection for Negotiate-authenticated HTTP or HTTPS requests. This could result in the use of credentials from a different connection, contrary to expectations. (CVE-2026-1965) It was discovered that curl incorrectly leaked OAuth2 bearer tokens when following a redirect. This could result in tokens being sent to the wrong host, contrary to expectations. (CVE-2026-3783) Muhamad Arga Reksapati discovered that curl incorrectly reused existing HTTP proxy connections even if the request used different credentials. This could result in the use of incorrect credentials, contrary to expectations. (CVE-2026-3784) Daniel Wade discovered that curl incorrectly handled certain memory operations when doing a second SMB request to the same host. An attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 25.10. (CVE-2026-3805) Yihang Zhou discovered that curl incorrectly reused .netrc file credentials when following redirects. This could result in the use of credentials for a different host, contrary to expectations. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2025-0167)

USN-8081-1: libpng vulnerabilities

Ubuntu Security Advisories
1 week 2 days ago
It was discovered that libpng did not properly handle memory when processing certain PNG files. An attacker could possibly use this issue to cause libpng to crash, resulting in a denial of service, or disclose sensitive information. (CVE-2025-64505) Joshua Inscoe discovered that libpng did not properly handle memory when processing certain PNG files. An attacker could possibly use this issue to cause libpng to crash, resulting in a denial of service, disclose sensitive information, or execute arbitrary code. (CVE-2026-25646)