These are the Ubuntu security notices that affect the current supported releases of Ubuntu. These notices are also posted to the ubuntu-security-announce mailing list (list archive). To report a security vulnerability in an Ubuntu package, please contact the Ubuntu Security Team. You may also be interested in learning about Ubuntu security policies. For more details on a specific CVE or source package, please see the Ubuntu CVE Tracker.

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Latest notices

USN-3747-1: OpenJDK 10 vulnerabilities

It was discovered that OpenJDK did not properly validate types in some situations. An attacker could use this to construct a Java class that could possibly bypass sandbox restrictions. (CVE-2018-2825, CVE-2018-2826) It was discovered that the PatternSyntaxException class in OpenJDK did not properly validate arguments passed to it. An attacker…

21 August 2018 | ubuntu-18.04-lts

USN-3742-3: Linux kernel (Trusty HWE) regressions

USN-3742-2 introduced mitigations in the Linux Hardware Enablement (HWE) kernel for Ubuntu 12.04 ESM to address L1 Terminal Fault (L1TF) vulnerabilities (CVE-2018-3620, CVE-2018-3646). Unfortunately, the update introduced regressions that caused kernel panics when booting in some environments as well as preventing Java applications from starting….

21 August 2018 | ubuntu-12.04-esm

USN-3746-1: APT vulnerability

It was discovered that APT incorrectly handled the mirror method (mirror://). If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages in environments configured to use mirror:// entries.

20 August 2018 | ubuntu-18.04-lts

USN-3745-1: wpa_supplicant and hostapd vulnerability

It was discovered that wpa_supplicant and hostapd incorrectly handled certain messages. An attacker could possibly use this to access sensitive information.

20 August 2018 | ubuntu-18.04-lts, ubuntu-16.04-lts, ubuntu-14.04-lts

USN-3741-3: Linux kernel regressions

USN-3741-1 introduced mitigations in the Linux kernel for Ubuntu 14.04 LTS to address L1 Terminal Fault (L1TF) vulnerabilities (CVE-2018-3620, CVE-2018-3646). Unfortunately, the update introduced regressions that caused kernel panics when booting in some environments as well as preventing Java applications from starting. This update fixes the…

17 August 2018 | ubuntu-14.04-lts

USN-3658-3: procps-ng vulnerabilities

USN-3658-1 fixed a vulnerability in procps. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that the procps-ng top utility incorrectly read its configuration file from the current working directory. A local attacker could possibly use this issue to escalate privileges….

16 August 2018 | ubuntu-12.04-esm

USN-3744-1: PostgreSQL vulnerabilities

Andrew Krasichkov discovered that the PostgreSQL client library incorrectly reset its internal state between connections. A remote attacker could possibly use this issue to bypass certain client-side connection security features. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-10915) It was discovered that PostgreSQL…

16 August 2018 | ubuntu-18.04-lts, ubuntu-16.04-lts, ubuntu-14.04-lts

USN-3743-1: WebKitGTK+ 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 scripting attacks, denial of service attacks, and arbitrary code execution.

16 August 2018 | ubuntu-18.04-lts, ubuntu-16.04-lts

USN-3733-2: GnuPG vulnerability

USN-3733-1 fixed a vulnerability in GnuPG. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that GnuPG is vulnerable to a cache…

15 August 2018 | ubuntu-12.04-esm

USN-3742-2: Linux kernel (Trusty HWE) vulnerabilities

USN-3742-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 14.04 for Ubuntu 12.04 ESM. It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on…

14 August 2018 | ubuntu-12.04-esm