Ubuntu Security Advisories

It was discovered that Git did not properly sanitize URLs when asking for credentials via a terminal prompt. An attacker could possibly use this issue to trick a user into disclosing their password. (CVE-2024-50349) It was discovered that Git did not properly handle carriage return characters in its credential protocol. An attacker could use this issue to send unexpected data to credential helpers, possibly leading to a user being tricked into disclosing sensitive information. (CVE-2024-52006)

It was discovered that SimGear could be made to bypass the sandboxing of Nasal scripts. An attacker could possibly use this issue to execute arbitrary code.

USN-7916-1 fixed a vulnerability in python-apt. The update had a PEP 440 incompatible version. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Julian Andres Klode discovered that python-apt incorrectly handled deb822 configuration files. An attacker could use this issue to cause python-apt to crash, resulting in a denial of service.

It was discovered that the libpng simplified API incorrectly processed palette PNG images with partial transparency and gamma correction. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-66293) Petr Simecek, Stanislav Fort and Pavel Kohout discovered that the libpng simplified API incorrectly processed interlaced 16-bit PNGs with 8-bit output format and non-minimal row strides. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2026-22695) Cosmin Truta discovered that the libpng simplified API incorrectly handled invalid row strides. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2026-22801)

It was discovered that cpp-httplib did not correctly handle HTTP headers. A remote attacker could possibly use this issue to bypass authorization and impersonate users.

It was discovered that Erlang incorrectly validated peer certificates when incorrect extended key usage was presented. A remote attacker could possibly use this issue to bypass SSL key usage restrictions.

It was discovered that Rack incorrectly handled certain query parameters. An attacker could possibly use this issue to cause a limited denial of service. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2025-59830) It was discovered that Rack did not properly handle certain multipart form data. An attacker could possibly use this issue to cause memory exhaustion, leading to a denial of service. This issue was only addressed in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-61770, CVE-2025-61772) It was discovered that Rack did not properly handle certain form fields. An attacker could possibly use this issue to cause memory exhaustion, leading to a denial of service. This issue was only addressed in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-61771) It was discovered that Rack did not properly handle certain headers. An attacker could possibly use this issue to bypass proxy access restrictions and obtain sensitive information. (CVE-2025-61780) Tomoya Yamashita discovered that Rack did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause memory exhaustion, leading to a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-61919)

It was discovered that zlib, vendored in klibc, did not properly handle integer arithmetic. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service.

It was discovered that AngularJS did not properly sanitize certain `xlink:href` attributes. A remote attacker could possibly use this issue to perform cross site scripting. This issue only affected Ubuntu 16.04 LTS. (CVE-2019-14863) It was discovered that AngularJS incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause AngularJS to consume resources, leading to a regular expression denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2022-25844) It was discovered that AngularJS incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause AngularJS to consume resources, leading to a regular expression denial of service. (CVE-2023-26116, CVE-2023-26117) It was discovered that AngularJS incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause AngularJS to consume resources, leading to a regular expression denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2023-26118, CVE-2024-21490) It was discovered that AngularJS did not properly sanitize certain inputs in HTML elements. A remote attacker could possibly use this issue to perform spoofing and obtain sensitive information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2024-8372, CVE-2024-8373, CVE-2025-2336) It was discovered that AngularJS did not properly sanitize certain inputs in HTML elements. A remote attacker could possibly use this issue to perform spoofing and obtain sensitive information. (CVE-2025-0716)

USN-7927-1 fixed vulnerabilities in urllib3. The update for CVE-2025-66471 introduced a regression in urllib3 when decompressing zstd data. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Illia Volochii discovered that urllib3 did not limit the steps in a decompression chain. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. (CVE-2025-66418) Rui Xi discovered that urllib3 incorrectly handled highly compressed data. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04, and Ubuntu 25.10. (CVE-2025-66471) For the brotli encoding, the fix for CVE-2025-66471 requires an additional security update in the brotli package.

Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Jakub Ciolek discovered that the Go Cryptography module included in Google Guest Agent did not validate GSSAPI authentication requests during SSH operations. An attacker could possibly use this issue to cause a denial of service.

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: - Cryptographic API; - ACPI drivers; - InfiniBand drivers; - Media drivers; - Network drivers; - Pin controllers subsystem; - AFS file system; - F2FS file system; - Tracing infrastructure; - Memory management; - Appletalk network protocol; - Netfilter; (CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935, CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090, CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)

USN-7927-1 fixed vulnerabilities in urllib3. The update for CVE-2025-66471 introduced a regression in the zstd decompression component inside urllib3. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Illia Volochii discovered that urllib3 did not limit the steps in a decompression chain. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. (CVE-2025-66418) Rui Xi discovered that urllib3 incorrectly handled highly compressed data. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04, and Ubuntu 25.10. (CVE-2025-66471) For the brotli encoding, the fix for CVE-2025-66471 requires an additional security update in the brotli package.

It was discovered that urllib3 incorrectly handled decompression during HTTP redirects. An attacker could possibly use this issue to cause urllib3 to use excessive resources, causing a denial of service.

It was discovered that Libtasn1 incorrectly handled decoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. (CVE-2025-13151) It was discovered that Libtasn1 incorrectly handled encoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-46848)

It was discovered that Python's http.client did not properly handle the Content-Length header in HTTP responses. A malicious server could exploit this to cause Python to allocate excessive memory, leading to a denial of service.

It was discovered that PHP incorrectly handled memory while reading images in multi-chunk mode. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.04 and Ubuntu 25.10. (CVE-2025-14177) It was discovered that PHP incorrectly handled memory when element count exceeds 32-bit limit. An attacker could possibly use this issue to cause a denial of service. (CVE-2025-14178) It was discovered that PHP incorrectly handled memory when using the PDO PostgreSQL driver. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.04 and Ubuntu 25.10. (CVE-2025-14180)

It was discovered that libheif did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-25269) Aldo Ristori discovered that libheif did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2025-68431)

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: - Cryptographic API; - Media drivers; - Memory management; - Appletalk network protocol; - Netfilter; (CVE-2025-37958, CVE-2025-38666, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)