USN-5168-2 thunderbird vulnerability

Tavis Ormandy discovered that NSS, included with Thunderbird, incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause Thunderbird to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-5150-1 openexr vulnerability

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash...

USN-5077-1 apport vulnerabilities

Maik Münch and Stephen Röttger discovered that Apport incorrectly handled certain information gathering operations. A local attacker could use this issue to gain read access to arbitrary files, possibly containing sensitive information...

USN-5046-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.11, linux-kvm, linux-oracle, linux-raspi vulnerabilities

It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. CVE-2020-26558, CVE-2021-0129 Michael Brown discovered that the Xen netback driver in the Linux kernel did...

USN-4936-1 thunderbird vulnerabilities

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. CVE-2021-23968,...

USN-4806-1 mpg123 vulnerability

It was discovered that mpg123 failed to handle certain malformed mp3 files. An attacker could use this vulnerability to potentially leak sensitive information or cause a crash...

USN-4878-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities

It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2020-36158 Ryota Shiga discovered that the sockopt BPF hooks in th...

USN-4724-1 openldap vulnerabilities

It was discovered that OpenLDAP incorrectly handled Certificate Exact Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. CVE-2020-36221 It was discovered that OpenLDAP incorrectly handled saslAuthzTo processing. A...

USN-4686-1 ghostscript vulnerabilities

It was discovered that Ghostscript incorrectly handled certain image files. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could use this issue to cause Ghostscript to crash, resulting in a denial of service, or possibly execute arbitrary co...

USN-4571-1 ruby-rack-cors vulnerability

It was discovered that rack-cors did not properly handle relative file paths. An attacker could use this vulnerability to access arbitrary files...

USN-4440-1 linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities

It was discovered that the network block device nbd implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service system crash. CVE-2019-16089 It was discovered that the kernel-user space relay...

USN-4429-1 evolution-data-server vulnerability

It was discovered that Evolution Data Server incorrectly handled STARTTLS when using SMTP and POP3. A remote attacker could possibly use this issue to perform a response injection attack...

USN-4345-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

Al Viro discovered that the Linux kernel for s390x systems did not properly perform page table upgrades for kernel sections that use secondary address mode. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2020-11884 It was discovered that t...

USN-4337-1 openjdk-8, openjdk-lts vulnerabilities

It was discovered that OpenJDK incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service while processing a specially crafted regular expression. CVE-2020-2754, CVE-2020-2755 It was discovered that OpenJDK incorrectly handled class...

USN-4135-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

Peter Pi discovered a buffer overflow in the virtio network backend vhostnet implementation in the Linux kernel. An attacker in a guest may be able to use this to cause a denial of service host OS crash or possibly execute arbitrary code in the host OS. CVE-2019-14835 It was discovered that the...

USN-4069-2 linux-hwe vulnerabilities

USN-4069-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.04. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 19.04 for Ubuntu 18.04 LTS. It was discovered that an integer overflow existed in the Linux kernel when reference counting...

USN-3983-1 linux vulnerabilities

Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered...

USN-3801-2 firefox regressions

USN-3801-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafte...

USN-3741-2 linux-lts-xenial, linux-aws vulnerabilities

USN-3741-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that memory present in the L1 data cache of an Intel CPU core may be...

USN-3678-1 linux, linux-aws, linux-gcp, linux-kvm vulnerabilities

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service system crash when mounted. CVE-2018-1092 It was discovered...

USN-3653-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities

USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing...

USN-3581-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities

USN-3581-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contain...

USN-3291-1 linux vulnerabilities

Dmitry Vyukov discovered that the generic SCSI sg subsystem in the Linux kernel contained a stack-based buffer overflow. A local attacker with access to an sg device could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2017-7187 It was discovered that a...

USN-2965-3 linux-raspi2 vulnerabilities

Jann Horn discovered that the extended Berkeley Packet Filter eBPF implementation in the Linux kernel did not properly reference count file descriptors, leading to a use-after-free. A local unprivileged attacker could use this to gain administrative privileges. CVE-2016-4557 Ralf Spenneberg...

USN-2958-1 poppler vulnerabilities

It was discovered that the poppler pdfseparate tool incorrectly handled certain filenames. A local attacker could use this issue to cause the tool to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS. CVE-2013-4473,...

USN-2950-1 samba vulnerabilities

Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a machine-in-the-middle attack, or possibly execute arbitrary code. CVE-2015-5370 Stefan...

USN-2890-2 linux-lts-wily vulnerabilities

It was discovered that a use-after-free vulnerability existed in the AFUNIX implementation in the Linux kernel. A local attacker could use crafted epollctl calls to cause a denial of service system crash or expose sensitive information. CVE-2013-7446 It was discovered that the KVM implementation ...

USN-2723-1 firefox vulnerabilities

A use-after-free was discovered when resizing a canvas element during restyling in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with th...

USN-2556-1 oxide-qt vulnerabilities

It was discovered that Chromium did not properly handle the interaction of IPC, the gamepad API and V8. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking the program...

USN-2516-1 linux vulnerabilities

A flaw was discovered in the Kernel Virtual Machine's KVM emulation of the SYSTENTER instruction when the guest OS does not initialize the SYSENTER MSRs. A guest OS user could exploit this flaw to cause a denial of service of the guest OS crash or potentially gain privileges on the guest OS...

USN-2466-1 linux vulnerabilities

A null pointer dereference flaw was discovered in the the Linux kernel's SCTP implementation when ASCONF is used. A remote attacker could exploit this flaw to cause a denial of service system crash via a malformed INIT chunk. CVE-2014-7841 A race condition with MMIO and PIO transactions in the KV...

USN-2397-1 ruby1.8, ruby1.9.1, ruby2.0, ruby2.1 vulnerabilities

Will Wood discovered that Ruby incorrectly handled the encodes function. An attacker could possibly use this issue to cause Ruby to crash, resulting in a denial of service, or possibly execute arbitrary code. The default compiler options for affected releases should reduce the vulnerability to a...

USN-8892-1 wsl-pro-service vulnerability

Darshan U discovered that Ubuntu Pro for WSL exposed the attach token in command-line arguments when enabling a subscription on a WSL instance. An attacker could possibly use this issue to obtain sensitive information and gain unauthorized access to Ubuntu Pro repositories...

USN-8699-1 libssh vulnerabilities

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 w...

USN-8661-3 linux-fips, linux-gke vulnerabilities

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. CVE-2025-275...

USN-8630-5 linux-raspi, linux-raspi-realtime 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: - x86 architecture; - InfiniBand drivers; - Network drivers; - Mellanox network drivers; - File systems infrastructur...

USN-8666-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-bluefield, linux-fips, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-oracle, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp vulnerabilities

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. CVE-2025-275...

USN-8643-2 linux-gke, linux-lowlatency, linux-lowlatency-hwe-6.8 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: - Network drivers; - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531...

USN-8651-1 curl vulnerability

It was discovered that curl incorrectly handled reusing connections when the origin changed between transfers. A remote attacker could possibly use this issue to obtain sensitive information...

USN-8620-3 linux-intel-iot-realtime, linux-intel-iotg-5.15 vulnerabilities

Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could expose...

USN-8621-1 samba vulnerabilities

It was discovered that Samba's pamwinbind incorrectly handled home directory ownership when mkhomedir was enabled. A local attacker could possibly use this issue to cause a denial of service by triggering a change in ownership of the root directory. CVE-2026-15779 Arjun Basnet, Douglas Bagnall, a...

USN-8617-1 linux-kvm vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

USN-8610-1 linux-azure-fde vulnerabilities

Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could expose...

USN-8606-1 linux-azure, linux-azure-6.8 vulnerabilities

It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. CVE-2025-54505 It was discovered that some AMD Zen 2 processors did not properly isolate shared...

USN-8583-1 giflib vulnerabilities

It was discovered that GIFLIB incorrectly handled certain GIF image files. If a user or automated system were tricked into opening a specially crafted GIF file, a remote attacker could use this issue to cause GIFLIB to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-8580-2 accountsservice vulnerabilities

USN-8580-1 fixed vulnerabilities in AccountsService. This update provides the corresponding fixes for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that the Ubuntu-specific SetLanguage patch to AccountsService incorrectly...

USN-8576-1 linux-nvidia-tegra-5.15 vulnerabilities

Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could expose...

USN-8569-1 linux-hwe-7.0 vulnerabilities

It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. CVE-2025-54505 It was discovered that some AMD Zen 2 processors did not properly isolate shared...

USN-8555-1 ubuntu-advantage-tools vulnerabilities

Bilal Teke discovered that Ubuntu Advantage Tools exposed the Pro bearer token in command-line arguments when validating APT credentials. A local attacker could possibly use this issue to obtain sensitive information and gain unauthorized access to Ubuntu Pro repositories. CVE-2026-9494 Frederick...

USN-8543-1 wget vulnerabilities

It was discovered that Wget mishandled semicolons in the userinfo subcomponent of a URL. A remote attacker could possibly use this issue to trick a user into connecting to a different host than intended. This issue only affected Ubuntu 14.04 LTS. CVE-2024-38428 It was discovered that Wget...