USN-8954-1: zlib vulnerability

Ali Firas discovered that zlib incorrectly handled certain non-blocking write operations. An attacker could possibly use this issue to trigger a heap buffer overflow, resulting in a denial of service or arbitrary code execution...

USN-8953-1: OpenVPN vulnerability

It was discovered that OpenVPN incorrectly handled certificate subject fields. A remote authenticated user could possibly use this issue to impersonate other users...

USN-8952-1: Tornado vulnerabilities

It was discovered that Tornado did not properly handle certain HTTP requests and network inputs. An attacker could possibly use these issues to cause a denial of service, expose sensitive information, or bypass access controls. CVE-2023-54397, CVE-2024-14029, CVE-2026-91990, CVE-2026-91992,...

USN-8890-2: libsoup vulnerabilities

USN-8890-1 fixed vulnerabilities in libsoup. This update provides the corresponding updates for libsoup3 on Ubuntu 26.10. Original advisory details: It was discovered that libsoup incorrectly handled certain HTTP/2 requests. A remote attacker could possibly use this issue to cause a denial of...

USN-8951-1: c-ares vulnerabilities

It was discovered that c-ares incorrectly parsed certain SOA replies. A remote attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. CVE-2020-22217 It was discovered that c-ares incorrectl...

USN-8947-1: NSS update

This update removes the "emSign ECC Root CA - G3" and "Comodo AAA Services root" CA certificate due to intermediate CA certificates being compromised...

USN-8950-1: poppler vulnerability

It was discovered that poppler incorrectly handled the password length limit when decrypting certain encrypted PDF files. An attacker could possibly use this issue to cause a denial of service...

USN-8930-2: U-Boot vulnerabilities

USN-8930-1 fixed some vulnerabilities in U-Boot. This update provides the corresponding fix for U-Boot on Ubuntu 26.10. Original advisory details: Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain NFS READ and NFS READLINK responses. An attacker could...

USN-8949-1: Ghostscript vulnerabilities

Rick de Jager discovered that Ghostscript incorrectly handled memory under certain circumstances when processing PostScript documents. If a user or automated system were tricked into processing a specially crafted document, an attacker could possibly use this issue to bypass the sandbox and execu...

USN-8948-2: PHP vulnerabilities

USN-8948-1 fixed vulnerabilities in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS and Ubuntu 26.10. This provides the corrosponding updates in Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: It was discovered that PHP incorrectly handle...

USN-8948-1: PHP vulnerabilities

It was discovered that PHP incorrectly handled out-of-memory conditions while processing requests. A remote attacker could use this issue to execute arbitrary code. CVE-2026-109618 It was discovered that PHP incorrectly managed internal request state across worker reuse. A remote attacker could u...

USN-8946-1: Unbound vulnerabilities

It was discovered that Unbound incorrectly handled certain TCP connections. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS, Ubuntu 24.04 LTS, Ubuntu 22.04 LTS and Ubuntu 20.04 LTS...

USN-8944-2: ca-certificates update

USN-8944-1 updated ca-certificates. This update provides the corresponding changes for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS by removing the "emSign ECC Root CA - G3" and "Comodo AAA Services root" CA certificates. Original advisory details: This update remove...

USN-8945-1: XZ Utils vulnerability

It was discovered that XZ Utils incorrectly handled certain memory allocation failures when reinitializing decoders for specific compressed file formats. An attacker could possibly use this issue to trigger an invalid memory write, resulting in a denial of service or arbitrary code execution...

USN-8944-1: ca-certificates update

This update removes the "emSign ECC Root CA - G3" CA certificate due to intermediate CA certificates being compromised. In addition, in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS, the ca-certificates package contained outdated CA certificates. This update refreshes the included...

USN-8942-1: .NET vulnerabilities

Multiple security issues were discovered in .NET and this update includes new upstream .NET versions to fix these issues. .NET 8 has been updated to 8.0.32 in Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. .NET 10 has been updated to 10.0.13 in Ubuntu 24.04 LTS, Ubuntu 26.04 LTS and Ubuntu 26.10. .NET 11...

USN-8943-1: Protocol Buffers vulnerability

It was discovered that Protocol Buffers did not properly handle negative varint lengths or enforce recursion limits when parsing input in the PHP library. An attacker could possibly use this issue to cause applications using Protocol Buffers to crash or consume resources, resulting in a denial of...

USN-8708-2: sudo-rs vulnerability

USN-8708-1 fixed a vulnerability in sudo-rs. This update provides the corresponding fix for Ubuntu 26.10. Original advisory details: It was discovered that sudo-rs incorrectly handled time-of-check vs time- of-use conditions in sudoedit. A local attacker with permission to edit specific files usi...

USN-8941-1: Squid vulnerabilities

It was discovered that Squid incorrectly handled certain HTTP Transfer- Encoding headers. An attacker could possibly use this issue to perform HTTP request smuggling attacks, bypass security mechanisms, or poison web caches. CVE-2026-61642 It was discovered that Squid incorrectly handled certain...

USN-8940-1: Perl XS::Parse::Keyword module vulnerability

It was discovered that the Perl XS::Parse::Keyword module did not correctly handle certain inputs. If a user or automated system were tricked into receiving specially crafted input, an attacker could cause a denial of service...

USN-8934-1: PyJWT vulnerabilities

Kingsley Olukanni discovered that PyJWT did not properly handle unknown key identifiers when retrieving signing keys. An attacker could possibly use this issue to amplify requests to the configured key endpoint, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu...

USN-8939-1: libXtst vulnerabilities

It was discovered that libXtst did not properly handle certain RECORD replies from the X server. A malicious X server could possibly use this issue to cause libXtst clients to crash, resulting in a denial of service. CVE-2026-94286 Tobias Stoeckmann discovered that libXtst did not properly handle...

USN-8927-2: curl vulnerabilities

USN-8927-1 fixed vulnerabilities in curl. This update provides the corresponding fixes for Ubuntu 26.10. Original advisory details: It was discovered that curl, when built with GnuTLS support, had an out-of-bounds read in the WebSocket send path. An attacker could possibly use this issue to obtai...

USN-8938-1: cifs-utils vulnerability

It was discovered that cifs-utils incorrectly handled credentials files used by privileged mount.cifs invocations. A local attacker could possibly use this issue to inject arbitrary mount options into a privileged mount, resulting in a privilege escalation...

USN-8937-1: OpenSSH vulnerabilities

It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. CVE-2026-106552 It was discovered that OpenSSH's sshd...

USN-8936-1: PHP vulnerabilities

It was discovered that PHP did not properly validate the size of MySQL server packets in the mysqlnd driver. A malicious server could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04...

USN-8935-1: Go vulnerabilities

It was discovered that Go did not enforce a maximum recursion depth when parsing deeply nested ASN.1 structures. An attacker could possibly use this issue to cause Go to crash, resulting in a denial of service. CVE-2026-33818 It was discovered that Go incorrectly reset the depth counter when...

USN-8933-1: RabbitMQ Server vulnerabilities

It was discovered that RabbitMQ Server incorrectly handled CORS wildcard origin configuration. An attacker could possibly use this issue to cause a cross-site request forgery attack. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04...

USN-8922-2: 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: - S390 architecture; - IIO ADC drivers; - Multiple devices driver; - PCI subsystem; - VFIO drivers; - Network file...

USN-8883-2: Go vulnerability

USN-8883-1 fixed a vulnerability in Go versions 1.18, 1.21, and 1.24. This update provides the corresponding fix for Go version 1.23. Original advisory details: It was discovered that the Go x/net/idna package incorrectly handled certain Punycode-encoded labels that decoded to ASCII-only labels. ...

USN-8916-2: PyJWT vulnerabilities

USN-8916-1 fixed vulnerabilities in PyJWT. This update provides the corresponding fix for PyJWT on Ubuntu 26.10. Original advisory details: YuSung Han discovered that PyJWT did not properly validate certain JWK keys when performing HMAC verification. An attacker could possibly use this issue to...

USN-8932-1: curl vulnerabilities

Stanislav Fort discovered that curl did not properly clear AWS SigV4 authentication state when CURLOPTAWSSIGV4 was set to NULL. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2026-86409 Stanislav Fort...

USN-8931-1: Apache HTTP Server vulnerabilities

이지웅 discovered that Apache HTTP Server exposed WebDAV property information. A remote attacker could possibly use this issue to obtain sensitive information. CVE-2026-58415 Zhen Kong and Charles Vosburgh discovered that Apache HTTP Server did not properly validate FTP server responses. A remote...

USN-8930-1: U-Boot vulnerabilities

Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain NFS READ and NFS READLINK responses. An attacker could possibly use this issue to trigger a buffer overflow, resulting in a denial of service or arbitrary code execution. CVE-2026-74220, CVE-2026-74221...

USN-8929-1: Bind vulnerabilities

Zuyao Xu and Xiang Li discovered that Bind incorrectly handled certain malformed DNSKEY records. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS...

USN-8928-1: OpenSSH vulnerabilities

It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. CVE-2026-106552 It was discovered that OpenSSH's sshd...

USN-8927-1: curl vulnerabilities

It was discovered that curl, when built with GnuTLS support, had an out-of-bounds read in the WebSocket send path. An attacker could possibly use this issue to obtain sensitive information. CVE-2026-107928 Maksim discovered that curl did not correctly include the interface binding in connection...

USN-8926-1: urllib3 vulnerabilities

Yu-Fu Fu, Seth Larson and Yonatan Magier discovered that urllib3 did not correctly handle certain certificate validations. An attacker could possibly use this issue to observe or modify forwarded traffic. This issue only affected Ubuntu 26.04 LTS. CVE-2026-97687 Martin Desrumaux discovered that...

USN-8925-1: YAML-LibYAML vulnerabilities

Dominique Dumont discovered that YAML-LibYAML did not correctly handle certain reflection operations. If a user or system were tricked into opening a specially crafted file, an attacker could possibly use this issue to delete files. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS...

USN-8908-2: BlueZ regression

USN-8908-1 fixed vulnerabilities in BlueZ. Unfortunately, that update introduced a regression in the A2DP profile: cached remote stream endpoints were no longer loaded at startup, which could cause Bluetooth audio devices to fail to reconnect automatically or to fall back to low-quality audio...

USN-8924-1: Linux kernel vulnerabilities

It was discovered that the timer stats implementation in the Linux kernel allowed the discovery of a real PID value while inside a PID namespace. A local attacker could use this to expose sensitive information. CVE-2017-5967 Wen Xu discovered that the XFS file system implementation in the Linux...

USN-8918-1: Linux kernel (Azure) vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

USN-8921-1: 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: - S390 architecture; - IIO ADC drivers; - Multiple devices driver; - PCI subsystem; - VFIO drivers; - Network file...

USN-8920-1: 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: - Ethernet bonding driver; - Network drivers; - F2FS file system; - Network file system NFS server daemon; - Tracing...

USN-8923-1: 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: - SCSI subsystem; - Bluetooth subsystem; CVE-2022-49111, CVE-2022-49114...

USN-8919-1: 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: - Ethernet bonding driver; - Network drivers; - F2FS file system; - Tracing infrastructure; - iouring subsystem; -...

USN-8922-1: 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: - S390 architecture; - IIO ADC drivers; - Multiple devices driver; - PCI subsystem; - VFIO drivers; - Network file...

USN-8917-1: Linux kernel vulnerabilities

It was discovered that some AMD processors did not properly perform Reverse Map Table RMP checks when the IOMMU accessed certain host buffers. A local attacker with hypervisor access could possibly use this to trigger an out-of-bounds condition and compromise the integrity of SEV-SNP guest memory...

USN-8916-1: PyJWT vulnerabilities

YuSung Han discovered that PyJWT did not properly validate certain JWK keys when performing HMAC verification. An attacker could possibly use this issue to forge authentication tokens. This issue only affected Ubuntu 26.04 LTS. CVE-2026-102266 Rohan Das discovered that PyJWT incorrectly handled...

USN-8915-1: FFmpeg vulnerabilities

Momoko Shiraishi discovered that FFmpeg did not correctly handle certain memory operations. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. CVE-2026-30754 It...