Vendor advisories

Ubuntu Security Notices

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

Current Checked 18 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.

RSS for these results
Ubuntu Security NoticesUSN-8870-1
Severity not listed

USN-8870-1: OpenStack Aodh and Watcher vulnerability

Chen YuXiang discovered that OpenStack Aodh did not correctly enforce project scoping in its alarm list API and that the OpenStack Watcher webhook trigger endpoint did not apply authorization. An attacker could possibly use this issue to access sensitive alarm metadata or trig...

Ubuntu Security NoticesUSN-8871-1
Severity not listed

USN-8871-1: Linux kernel (Raspberry Pi) 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; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (N...

Ubuntu Security NoticesUSN-8851-3
Severity not listed

USN-8851-3: 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: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2...

Vendor guidance

This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Ubuntu Security NoticesUSN-8868-1
Severity not listed

USN-8868-1: LibreOffice vulnerabilities

It was discovered that LibreOffice incorrectly handled WMF image imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63272) It was discovered that LibreOffice incorrectly handl...

Vendor guidance

(CVE-2026-63279) It was discovered that LibreOffice incorrectly mitigated out-of-bounds writes via Graphite font actions.

Ubuntu Security NoticesUSN-8867-1
Severity not listed

USN-8867-1: Ceph vulnerability

It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz-* headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz-* headers that ...

Ubuntu Security NoticesUSN-8864-1
Severity not listed

USN-8864-1: 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: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2...

Vendor guidance

This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Ubuntu Security NoticesUSN-8816-4
Severity not listed

USN-8816-4: Linux kernel (GKE) 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; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Bloc...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Block Device drivers; - InfiniBand drivers; - IOMMU subsystem; - Mul...

Ubuntu Security NoticesUSN-8818-6
Severity not listed

USN-8818-6: Linux kernel (FIPS) 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; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (N...

Ubuntu Security NoticesUSN-8851-2
Severity not listed

USN-8851-2: Linux kernel (Raspberry Pi) 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 file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2...

Vendor guidance

This update corrects flaws in the following subsystems: - Network file system (NFS) server daemon; - IPv6 networking; - Netfilter; (CVE-2025-38724, CVE-2026-53131, CVE-2026-53221)

Ubuntu Security NoticesUSN-8862-1
Severity not listed

USN-8862-1: libXpm vulnerability

It was discovered that libXpm did not correctly handle XPM images with zero-dimension values. A local attacker could possibly use this issue to cause libXpm to use excessive resources, leading to a denial of service.

Ubuntu Security NoticesUSN-8860-1
Severity not listed

USN-8860-1: OpenStack Designate vulnerability

It was discovered that OpenStack Designate did not properly validate overlapping zones under certain circumstances. An authenticated user could possibly use this issue to redirect DNS traffic to attacker-controlled systems or cause a denial of service.

Ubuntu Security NoticesUSN-8857-1
Severity not listed

USN-8857-1: KCoreAddons vulnerability

It was discovered that KCoreAddons incorrectly handled shell argument quoting in KShell::quoteArgs. The parsing did not adequately handle shell metacharacters, which could lead to a shell escape. An attacker could possibly use this issue to execute arbitrary commands in applic...

Ubuntu Security NoticesUSN-8859-1
Severity not listed

USN-8859-1: ImageMagick vulnerabilities

It was discovered that ImageMagick did not correctly handle certain images. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, ...

Ubuntu Security NoticesUSN-8855-1
Severity not listed

USN-8855-1: GStreamer Bad Plugins vulnerability

It was discovered that GStreamer Bad Plugins incorrectly validated the size of multi-channel audio blocks. An attacker could possibly use this issue with a specially crafted WAV file to cause the program to crash, resulting in a denial of service, or possibly execute arbitrary...

Ubuntu Security NoticesUSN-8856-1
Severity not listed

USN-8856-1: Kdenlive, MLT vulnerability

It was discovered that Kdenlive allowed dangerous proxy parameters when processing attacker-controlled project files. An attacker could use this to execute arbitrary commands via the MLT framework's ante/post consumer properties.

Ubuntu Security NoticesUSN-8845-1
Severity not listed

USN-8845-1: GVfs vulnerabilities

Keith Linneman discovered that GVfs did not properly validate data received from SFTP servers. An attacker could possibly use this issue to cause a heap buffer overflow, resulting in arbitrary code execution or a denial of service. (CVE-2026-84268) It was discovered that GVfs ...

Ubuntu Security NoticesUSN-8816-3
Severity not listed

USN-8816-3: Linux kernel (Oracle) 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; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Bloc...

Vendor guidance

This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - x86 architecture; - DRBD Distributed Replicated Block Device drivers; - InfiniBand drivers; - IOMMU subsystem; - Mul...

Ubuntu Security NoticesUSN-8817-3
Severity not listed

USN-8817-3: Linux kernel (AWS) 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; - InfiniBand drivers; - Network drivers; - TCM subsystem; - B.A.T.M.A.N.

Ubuntu Security NoticesUSN-8818-5
Severity not listed

USN-8818-5: Linux kernel (NVIDIA Tegra) 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; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) client; - Network file system (N...

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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