Aggregator

USN-8678-3: OpenSSL vulnerability

1 week 5 days ago

USN-8673-1 fixed vulnerabilities in OpenSSL. The update inadvertently left out the fix for CVE-2026-75803 in Ubuntu 26.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that OpenSSL incorrectly handled the QUIC server incoming channel queue. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-14456) It was discovered that OpenSSL incorrectly handled signature algorithm selection when using Raw Public Keys. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-14457) It was discovered that OpenSSL incorrectly handled QUIC INITIAL packet processing. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-18798) It was discovered that OpenSSL incorrectly handled buffering of DTLS records for a future epoch. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. (CVE-2026-54874) It was discovered that OpenSSL incorrectly handled CMS key unwrapping. A remote attacker could possibly use this issue to cause a heap buffer overflow, leading to a denial of service or arbitrary code execution. (CVE-2026-63072) It was discovered that OpenSSL incorrectly validated the sender distinguished name in CMP response messages. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-63073) It was discovered that OpenSSL incorrectly limited the growth of an internal certificate cache used during CMP operations. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. (CVE-2026-63074) It was discovered that OpenSSL incorrectly handled QUIC ACK-only packet retention. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-63075) It was discovered that OpenSSL incorrectly handled CMP protection algorithm validation. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-63076) It was discovered that OpenSSL incorrectly verified authentication tags when using certain AEAD ciphers via the EVP_Cipher() interface. An attacker could possibly use this issue to perform AEAD forgery attacks. (CVE-2026-75803)

USN-8700-1: MySQL vulnerabilities

Ubuntu Security Advisories

1 week 5 days ago

Multiple security issues were discovered in MySQL. MySQL has been updated to 8.4.11 in Ubuntu 26.04 LTS. Ubuntu 22.04 LTS and Ubuntu 24.04 LTS packages have been updated with backported patches. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-11.html https://www.oracle.com/security-alerts/cpujul2026.html

USN-8699-1: libssh vulnerabilities

Ubuntu Security Advisories

1 week 5 days ago

It was discovered that libssh had a stack buffer overflow in its SFTP server when constructing directory listing entries for long filenames. An attacker could possibly use this issue to cause libssh to crash or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-15370) It was discovered that libssh did not correctly handle SSH channel open messages advertising a zero maximum packet size. An authenticated remote attacker could possibly use this issue to cause libssh to consume excessive CPU resources, leading to a denial of service. (CVE-2026-59843) It was discovered that libssh did not correctly limit SFTP read request lengths in its server implementation. An authenticated remote attacker could possibly use this issue to cause libssh to allocate excessive memory, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-59844) It was discovered that libssh did not correctly handle ProxyCommand fork() failures. A local attacker could possibly use this issue to cause a denial of service. (CVE-2026-59845) It was discovered that libssh did not correctly sanitize shell metacharacters when expanding usernames in ProxyCommand strings. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-59846) It was discovered that libssh had incorrect AES-GCM tag verification when built with the OpenSSL backend. A machine-in-the-middle attacker could possibly use this issue to modify encrypted traffic without detection. (CVE-2026-59847) It was discovered that libssh did not correctly handle SFTP server responses for unknown request IDs. An attacker could possibly use this issue to cause libssh to use excessive memory, leading to a denial of service. (CVE-2026-59848) It was discovered that libssh had logic errors in certificate-based authentication that could cause clients to loop indefinitely when certificates were rejected. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-59849) It was discovered that libssh could invoke data callbacks on channels after they had been closed. An attacker could possibly use this issue to cause libssh to crash or execute arbitrary code. (CVE-2026-59850)

USN-8698-1: FreeRDP vulnerabilities

Ubuntu Security Advisories

1 week 5 days ago

It was discovered that FreeRDP contained multiple security issues. An attacker could possibly use these issues to obtain sensitive information, cause FreeRDP to crash, resulting in a denial of service, or execute arbitrary code.

USN-8697-1: GNU Core Utilities vulnerabilities

Ubuntu Security Advisories

1 week 5 days ago

It was discovered that GNU Core Utilities sort had a heap buffer under-read in its begfield() function. A local attacker could possibly use this issue to cause GNU Core Utilities to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2025-5278) It was discovered that GNU Core Utilities uniq had an out-of-bounds read when the -w option was used with crafted multibyte input. A local attacker could possibly use this issue to cause GNU Core Utilities to crash, resulting in a denial of service, or obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-56391)

USN-8696-1: Bind vulnerability

Ubuntu Security Advisories

1 week 5 days ago

It was discovered that Bind incorrectly handled DNSSEC validation when a domain was covered by both NSEC and NSEC3 records with only one type having an RRSIG. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service.

exiv2-0.28.9-1.fc45

Fedora Security Advisories

1 week 5 days ago

FEDORA-2026-a0cb1e1e61 Packages in this update:

exiv2-0.28.9-1.fc45

Update description:

Exiv2 0.28.9 bugfix release.

exiv2-0.28.9-1.fc43

Fedora Security Advisories

1 week 5 days ago

FEDORA-2026-2854e48ee4 Packages in this update:

exiv2-0.28.9-1.fc43

Update description:

Exiv2 0.28.9 bugfix release.

USN-8689-1: OpenJDK 26 vulnerabilities

Ubuntu Security Advisories

1 week 6 days ago

It was discovered that the JSSE component of OpenJDK 26 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-46968) It was discovered that the JSSE component of OpenJDK 26 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-46917) It was discovered that the ImageIO component of OpenJDK 26 did not correctly authorize users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-47010) It was discovered that the 2D component of OpenJDK 26 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-47021, CVE-2026-47059) It was discovered that the Libraries component of OpenJDK 26 did not correctly authorize users. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-47027) It was discovered that the Security component of OpenJDK 26 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-60147) It was discovered that the Libraries component of OpenJDK 26 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. (CVE-2026-47063) Lian Owen discovered that the 2D (Little CMS) component of OpenJDK 26 did not correctly handle certain integer arithmetic. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-41254)