Vendor advisories

Ubuntu Security Notices

Browse 390 advisories from this official source. Search by product, CVE, severity, or advisory ID.

Current Checked 12 minutes ago Checked every 15 minutes

390 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

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Ubuntu Security NoticesUSN-8661-5
Severity not listed

USN-8661-5: Linux kernel (Raspberry Pi) 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 p...

Vendor guidance

This update corrects flaws in the following subsystems: - x86 architecture; - InfiniBand drivers; - Network drivers; - NVME drivers; - Ext4 file system; - SMB network file system; - IPv4 networking; - Network traffic ...

Ubuntu Security NoticesUSN-8760-2
Severity not listed

USN-8760-2: Linux kernel (NVIDIA) 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: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 architecture; - RIS...

Vendor guidance

This update corrects flaws in the following subsystems: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Blo...

Ubuntu Security NoticesUSN-8801-1
Severity not listed

USN-8801-1: Linux kernel (Azure CVM) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permiss...

Vendor guidance

This update corrects flaws in the following subsystems: - Character device driver; - Networking core; - IPv6 networking; - Unix domain sockets; (CVE-2026-52938, CVE-2026-53325, CVE-2026-53361, CVE-2026-53362)

Ubuntu Security NoticesUSN-8800-1
Severity not listed

USN-8800-1: Linux kernel (NVIDIA BaseOS) 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: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 architecture; - RIS...

Vendor guidance

This update corrects flaws in the following subsystems: - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - ARM64 architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Blo...

Ubuntu Security NoticesUSN-8794-1
Severity not listed

USN-8794-1: GLib vulnerabilities

It was discovered that GLib's GDBus authentication mechanism failed to enforce length limitations on data lines read from a client. An unauthenticated attacker could exploit this to cause a denial of service via resource exhaustion. (CVE-2026-15588) It was discovered that the ...

Ubuntu Security NoticesUSN-8790-1
Severity not listed

USN-8790-1: Expat vulnerabilities

It was discovered that Expat could be made to allocate large amounts of memory when parsing a small crafted document. An attacker could possibly use this issue to cause Expat to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 24.04 LT...

Ubuntu Security NoticesUSN-8793-1
Severity not listed

USN-8793-1: Linux kernel (Azure CVM) 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: - Bluetooth drivers; - GPU drivers; - Hardware monitoring drivers; - SPI subsystem; - NTFS3 file ...

Vendor guidance

This update corrects flaws in the following subsystems: - Bluetooth drivers; - GPU drivers; - Hardware monitoring drivers; - SPI subsystem; - NTFS3 file system; - io_uring subsystem; - Ethernet bridge; - Multipath TCP...

Ubuntu Security NoticesUSN-8668-2
Severity not listed

USN-8668-2: Linux kernel (Raspberry Pi) 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 opera...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - S390 architecture; - x86 architecture; - Block layer subsystem; - Cryp...

Ubuntu Security NoticesUSN-8726-3
Severity not listed

USN-8726-3: Linux kernel (IBM) vulnerabilities

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permiss...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM64 architecture; - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - RISC-V architecture; - S390 architecture; - x86 architecture; - Blo...

Ubuntu Security NoticesUSN-8729-3
Severity not listed

USN-8729-3: Linux kernel 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: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framew...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framework; - Drivers core; - Bluetooth drivers; - Arm Firmware Framewo...

Ubuntu Security NoticesUSN-8761-3
Severity not listed

USN-8761-3: Linux kernel (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: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framew...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM32 architecture; - ARM64 architecture; - PowerPC architecture; - Compute Acceleration Framework; - Drivers core; - Bluetooth drivers; - Arm Firmware Framewo...

Ubuntu Security NoticesUSN-8730-4
Severity not listed

USN-8730-4: Linux kernel vulnerability

A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system. This update corrects flaws in the following subsystems: - IPv6 networking; - Netfilter;

Vendor guidance

This update corrects flaws in the following subsystems: - IPv6 networking; - Netfilter;

Ubuntu Security NoticesUSN-8792-1
Severity not listed

USN-8792-1: Memcached vulnerability

It was discovered that Memcached incorrectly handled ASCII authentication. A remote attacker could possibly use this issue to cause Memcached to crash, resulting in a denial of service.

Ubuntu Security NoticesUSN-8791-1
Severity not listed

USN-8791-1: Ghostscript vulnerability

It was discovered that Ghostscript incorrectly handled JPEG 2000 image components with mismatched subsampling factors. An attacker could possibly use this issue to cause Ghostscript to crash or execute arbitrary code if it opened a specially crafted file.

Ubuntu Security NoticesUSN-8786-1
Severity not listed

USN-8786-1: rsyslog vulnerability

It was discovered that rsyslog incorrectly calculated buffer sizes when replacing strings. A remote attacker could possibly use this issue to cause rsyslog to crash, resulting in a denial of service.

Ubuntu Security NoticesUSN-8789-1
Severity not listed

USN-8789-1: strongSwan vulnerabilities

It was discovered that strongSwan incorrectly handled PKCS#7 containers in the openssl plugin. A remote attacker could possibly use this issue to cause strongSwan to crash, resulting in a denial of service. (CVE-2026-78123) It was discovered that strongSwan incorrectly handled...

Ubuntu Security NoticesUSN-8788-1
Severity not listed

USN-8788-1: ClamAV vulnerabilities

It was discovered that ClamAV incorrectly handled certain zip archive files. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2026-20337, CVE-2026-20338) It was discovered that ClamAV incorrectly handled certain P...

Ubuntu Security NoticesUSN-8782-1
Severity not listed

USN-8782-1: Rclone vulnerability

It was discovered that Rclone incorrectly handled unauthenticated requests to the remote control API. An attacker could possibly use this issue to execute arbitrary commands as the user invoking rclone. (CVE-2026-49980)

Before you act

Start with the vendor's bulletin.

We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.

Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

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