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Ubuntu Security Notices (USN)

Source: https://ubuntu.com/security/notices

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  • Critical max 9.8
    USN-4894-1 7 CVEs 2 exploited

    webkit2gtk vulnerabilities

    A large number of 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 s…

    first Mar 29, 2021
  • Critical max 9.6
    USN-4593-1 1 CVE 1 exploited

    freetype vulnerability

    Sergei Glazunov discovered that FreeType did not correctly handle certain malformed font files. If a user were tricked into using a specially crafted font file, a remote attacker could cause FreeType to crash or possibly execute arbitrary code with user privi…

    first Oct 20, 2020
  • Critical max 9.6
    USN-4593-2 1 CVE 1 exploited

    freetype vulnerability

    USN-4593-1 fixed a vulnerability in FreeType. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Sergei Glazunov discovered that FreeType did not correctly handle certain malformed font files. If a user were tricked…

    first Oct 22, 2020
  • Critical max 10.0
    USN-4045-1 2 CVEs 2 exploited

    thunderbird vulnerabilities

    A type confusion bug was discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could exploit this by causing a denial of service, or executing arbirary code. (CVE-2019-11707) It was disc…

    first Jul 1, 2019
  • Critical max 10.0
    USN-4032-1 1 CVE 1 exploited

    firefox vulnerability

    It was discovered that a sandboxed child process could open arbitrary web content in the parent process via the Prompt:Open IPC message. When combined with another vulnerability, an attacker could potentially exploit this to execute arbitrary code.

    first Jun 24, 2019
  • Critical max 9.0
    USN-4010-1 1 CVE 1 exploited

    exim4 vulnerability

    It was discovered that Exim incorrectly handled certain decoding operations. A remote attacker could possibly use this issue to execute arbitrary commands.

    first Jun 5, 2019
  • Critical max 9.8
    USN-3565-1 1 CVE 1 exploited

    exim4 vulnerability

    Meh Chang discovered that Exim incorrectly handled memory in certain decoding operations. A remote attacker could use this issue to cause Exim to crash, resulting in a denial of service, or possibly execute arbitrary code.

    first Feb 12, 2018
  • Critical max 9.8
    USN-3296-1 1 CVE 1 exploited

    samba vulnerability

    It was discovered that Samba incorrectly handled shared libraries. A remote attacker could use this flaw to upload a shared library to a writable share and execute arbitrary code.

    first May 24, 2017
  • Critical max 9.8
    USN-7992-1 1 CVE 1 exploited

    inetutils vulnerability

    Kyu Neushwaistein discovered that telnetd in Inetutils incorrectly handled certain environment variables. A remote attacker could use this issue to bypass authentication and open a session as an administrator.

    first Feb 2, 2026
  • Critical max 9.3
    USN-7604-1 2 CVEs 1 exploited

    sudo vulnerabilities

    Rich Mirch discovered that Sudo incorrectly handled the host option. In environments where per-host rules are configured in the sudoers file, a local attacker could use this issue to bypass the host restrictions. (CVE-2025-32462) Rich Mirch discovered that Su…

    first Jun 30, 2025
  • Critical max 10.0
    USN-7268-1 2 CVEs 1 exploited

    activemq vulnerabilities

    It was discovered that Apache ActiveMQ incorrectly handled authentication. A remote attacker could possibly use this issue to run arbitrary code. (CVE-2022-41678) It was discovered that Apache ActiveMQ incorrectly handled deserialization. A remote attacker co…

    first Feb 14, 2025
  • Critical max 9.8
    USN-7242-1 1 CVE 1 exploited

    tomcat6 vulnerability

    Pierre Ernst discovered that the Tomcat JmxRemoteLifecycleListener did not implement a recommended fix. A remote attacker could possibly use this issue to execute arbitrary code.

    first Jan 30, 2025
  • Critical max 9.8
    USN-7181-1 1 CVE 1 exploited

    salt vulnerability

    It was discovered that Salt incorrectly handled web requests when the SSH client was enabled. An attacker could possibly use this issue to achieve remote code execution or obtain sensitive information.

    first Jan 6, 2025
  • Critical max 10.0
    USN-5316-1 1 CVE 1 exploited

    redis vulnerability

    Reginaldo Silva discovered that due to a packaging issue, a remote attacker with the ability to execute arbitrary Lua scripts could possibly escape the Lua sandbox and execute arbitrary code on the host.

    first Mar 8, 2022
  • Critical max 10.0
    USN-5197-1 2 CVEs 2 exploited

    apache-log4j2 vulnerability

    It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. An attacker could use this vulnerability to cause a denial of service. Please see the following link for more information: https:/…

    first Dec 15, 2021
  • Critical max 10.0
    USN-5192-1 1 CVE 1 exploited

    apache-log4j2 vulnerability

    Chen Zhaojun discovered that Apache Log4j 2 allows remote attackers to run programs via a special crafted input. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code. Please see the following link for more i…

    first Dec 14, 2021
  • Critical max 9.8
    USN-4268-1 1 CVE 1 exploited

    OpenSMTPD vulnerability

    It was discovered that OpenSMTPD incorrectly verified the sender's or receiver's e-mail addresses under certain conditions. An attacker could use this vulnerability to execute arbitrary commands as root.

    first Feb 5, 2020
  • Critical max 9.8
    USN-2964-1 5 CVEs 1 exploited

    openjdk-7 vulnerabilities

    Multiple vulnerabilities were discovered in the OpenJDK JRE related to information disclosure, data integrity, and availability. An attacker could exploit these to cause a denial of service, expose sensitive data over the network, or possibly execute arbitrar…

    first May 5, 2016
  • Critical max 9.8
    USN-2963-1 6 CVEs 1 exploited

    openjdk-8 vulnerabilities

    Multiple vulnerabilities were discovered in the OpenJDK JRE related to information disclosure, data integrity, and availability. An attacker could exploit these to cause a denial of service, expose sensitive data over the network, or possibly execute arbitrar…

    first May 5, 2016
  • Critical max 9.8
    USN-2363-2 1 CVE 1 exploited

    bash vulnerability

    USN-2363-1 fixed a vulnerability in Bash. Due to a build issue, the patch for CVE-2014-7169 didn't get properly applied in the Ubuntu 14.04 LTS package. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Tavis Ormand…

    first Sep 26, 2014
  • Critical max 9.8
    USN-2363-1 1 CVE 1 exploited

    bash vulnerability

    Tavis Ormandy discovered that the security fix for Bash included in USN-2362-1 was incomplete. An attacker could use this issue to bypass certain environment restrictions. (CVE-2014-7169)

    first Sep 25, 2014
  • Critical max 9.8
    USN-2362-1 1 CVE 1 exploited

    bash vulnerability

    Stephane Chazelas discovered that Bash incorrectly handled trailing code in function definitions. An attacker could use this issue to bypass environment restrictions, such as SSH forced command environments.

    first Sep 24, 2014
  • Critical max 10.0
    USN-7443-2 1 CVE 1 exploited

    erlang vulnerability

    USN-7443-1 fixed a vulnerability in Erlang. This update provides the corresponding update for Ubuntu 25.04. Original advisory details: Fabian Bäumer, Marcel Maehren, Marcus Brinkmann, and Jörg Schwenk discovered that Erlang OTP’s SSH module incorrect handled …

    first Apr 23, 2025
  • Critical max 9.8
    USN-7789-2 184 CVEs 1 exploited

    linux-raspi vulnerabilities

    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: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - Block layer…

    first Oct 8, 2025
  • Critical max 9.8
    USN-7770-1 184 CVEs 1 exploited

    linux-azure vulnerabilities

    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: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - Block layer…

    first Sep 24, 2025