#ubuntu

Ubuntu Security Notice 6648-2 - It was discovered that a race condition existed in the AppleTalk networking subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice 6668-1 - It was discovered that when python-openstackclient attempted to delete a non-existing access rule, it would delete another existing access rule instead, contrary to expectations.

Ubuntu Security Notice 6667-1 - It was discovered that Cpanel-JSON-XS incorrectly decoded certain data. A remote attacker could use this issue to cause Cpanel-JSON-XS to crash, resulting in a denial of service, or possibly obtain sensitive information.

Ubuntu Security Notice 6666-1 - It was discovered that libuv incorrectly truncated certain hostnames. A remote attacker could possibly use this issue with specially crafted hostnames to bypass certain checks.

Ubuntu Security Notice 6665-1 - Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Unbound incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. It was discovered that Unbound incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service.

Ubuntu Security Notice 6644-2 - USN-6644-1 fixed vulnerabilities in LibTIFF. This update provides the corresponding updates for Ubuntu 22.04 LTS. It was discovered that LibTIFF incorrectly handled certain files. If a user were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause the application to crash, resulting in a denial of service. It was discovered that LibTIFF incorrectly handled certain image files with the tiffcp utility. If a user were tricked into opening a specially crafted image file, an attacker could possibly use this issue to cause tiffcp to crash, resulting in a denial of service. It was discovered that LibTIFF incorrectly handled certain files. If a user were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause the application to consume resources, resulting in a denial of service.

Ubuntu Security Notice 6664-1 - It was discovered that less incorrectly handled certain file names. An attacker could possibly use this issue to cause a crash or execute arbitrary commands.

Ubuntu Security Notice 6663-1 - As a security improvement, this update prevents OpenSSL from returning an error when detecting wrong padding in PKCS#1 v1.5 RSA, to prevent its use in possible Bleichenbacher timing attacks.

Ubuntu Security Notice 6305-2 - USN-6305-1 fixed several vulnerabilities in PHP. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. It was discovered that PHP incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information.

Ubuntu Security Notice 6662-1 - Yi Yang discovered that the Hotspot component of OpenJDK 21 incorrectly handled array accesses in the C1 compiler. An attacker could possibly use this issue to cause a denial of service, execute arbitrary code or bypass Java sandbox restrictions. It was discovered that the Hotspot component of OpenJDK 21 did not properly verify bytecode in certain situations. An attacker could possibly use this issue to bypass Java sandbox restrictions.