USN-8720-1 gnupg2 vulnerability

It was discovered that GnuPG incorrectly validated authentication tag lengths when parsing CMS messages encrypted with AES-GCM. An attacker could possibly use this issue to bypass message integrity checks...

USN-8723-1 spice-vdagent vulnerabilities

It was discovered that SPICE vdagent had an integer overflow in the buffer size calculation used when writing to the daemon socket. A malicious or compromised SPICE host could possibly use this issue to cause SPICE vdagent to crash, resulting in a denial of service. CVE-2026-57965 It was discover...

USN-8722-1 libssh2 vulnerabilities

It was discovered that libssh2 incorrectly handled certain SFTP server responses. A remote attacker controlling an SSH server could use this issue to cause libssh2 to crash or possibly execute arbitrary code. CVE-2026-66032 It was discovered that libssh2 incorrectly handled AES-GCM cipher...

USN-8719-1 apr-util vulnerabilities

It was discovered that APR-util incorrectly performed password hash comparisons in a way that was not constant-time. An attacker could possibly use this issue to obtain sensitive information. CVE-2025-49506 It was discovered that APR-util incorrectly handled recursive XML element quoting. An...

USN-8721-1 openssh vulnerabilities

It was discovered that OpenSSH's ssh-agent incorrectly handled interactions between agent locking and the [email protected] extension. A remote attacker with access to a forwarded agent connection could possibly use this issue to perform operations that should only be available locally, su...

USN-8718-1 sssd vulnerability

It was discovered that SSSD did not properly validate authentication token lengths when processing PAM responder requests. A local attacker could possibly use this issue to cause SSSD to crash, resulting in a denial of service...

USN-8716-1 Several security issues were fixed in FFmpeg.

It was discovered that FFmpeg incorrectly handled certain crafted media files in the VobSub subtitle demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. CVE-2026-64830 It was discovered that FFmpeg incorrectly handled certain crafted DTS audi...

USN-8717-1 tika vulnerability

It was discovered that Apache Tika's ISA-Tab parser incorrectly handled file path resolution. An attacker who could place files in a directory that Tika subsequently parses could use this issue to read arbitrary files accessible to the Tika process and have their contents emitted into the extract...

USN-8661-4 linux-aws-5.15, linux-gcp-5.15 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-8715-1 linux-oracle-5.4 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-8714-1 linux, linux-aws, linux-azure, linux-azure-fips, linux-fips, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp 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: - OCFS2 file system; - SCTP protocol; CVE-2026-53043, CVE-2026-53224, CVE-2026-53225, CVE-2026-53246, CVE-2026-53309...

USN-8713-1 biosig vulnerabilities

Mark Bereza and Lilith Wyatt discovered that BioSig incorrectly handled certain crafted input files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. CVE-2026-22891, CVE-2026-20777...

USN-8712-1 pyasn1 vulnerabilities

It was discovered that pyasn1 did not properly bound the size of long-form tag identifiers when parsing BER, CER, or DER encoded data. An attacker could possibly use this issue to cause applications decoding untrusted ASN.1 data to consume excessive CPU resources, resulting in a denial of service...

USN-8711-1 libgcrypt20 vulnerability

It was discovered that Libgcrypt had a timing-based side-channel flaw in its RSA implementation. A remote attacker could possibly use this issue to obtain sensitive information...

USN-8688-2 pam vulnerability

USN-8688-1 fixed a vulnerability in PAM. This update provides the corresponding fix for PAM on Ubuntu 26.04 LTS. Original advisory details: Juthawong Naisanguansee discovered that PAM incorrectly cleared failed login attempt records when certain services invoked the account phase without first...

USN-8555-2 ubuntu-advantage-tools regression

USN-8555-1 fixed vulnerabilities in Ubuntu Advantage Tools. On Ubuntu 14.04 LTS only, it was discovered that some machines were unable to enable esm-infra-legacy due to a preemptive apt-helper check. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Bil...

USN-8710-1 libevent vulnerabilities

Alexis Challande discovered that libevent incorrectly handled certain empty output buffers. An attacker could possibly use this issue to trigger a use-after-free, resulting in a denial of service or arbitrary code execution. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.0...

USN-8709-1 ncurses vulnerability

It was discovered that ncurses incorrectly handled specially crafted terminfo database entries. A local attacker could possibly use this issue to cause applications using ncurses to crash, resulting in a denial of service...

USN-8708-1 rust-sudo-rs vulnerability

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 using sudoedit could use this issue to place files in arbitrary directories, and possibly escalate their privileges. This issue only...

USN-8690-1 pillow vulnerability

It was discovered that Pillow did not properly manage memory when processing certain image files. An attacker could possibly use this issue to cause a denial of service or read sensitive data...

USN-8705-2 zfs-linux vulnerability

USN-8705-1 fixed vulnerabilities in OpenZFS. This update provides the corresponding fix for OpenZFS on Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: It was discovered that OpenZFS incorrectly handled authorization checks for certain ioctl operations on Linux. A local attacker...

USN-8706-1 zlib vulnerability

It was discovered that zlib incorrectly handled negative length parameters in CRC32 combine functions. An attacker could use this issue to cause a denial of service via excessive CPU consumption...

USN-8707-1 opencryptoki vulnerabilities

It was discovered that primitive decoders in openCryptoki produced integer underflows when the encoded length was zero. An attacker could possibly use this issue to trigger out-of-bounds reads. CVE-2026-40253 It was discovered that openCryptoki incorrectly handled symlinks. An attacker in the...

USN-8704-1 cpio vulnerabilities

It was discovered that cpio incorrectly sanitized hard-link targets when extracting tar archives in copy-in mode. If a user or automated system were tricked into extracting a specially crafted tar archive, an attacker could possibly use this issue to create hard links to files outside the...

USN-8705-1 zfs-linux vulnerability

It was discovered that OpenZFS incorrectly handled authorization checks for certain ioctl operations on Linux. A local attacker could possibly use this issue to perform pool-administrative operations or access privileged information, resulting in an authorization bypass...

USN-8703-1 webkit2gtk vulnerabilities

Several 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...

USN-8702-1 util-linux vulnerabilities

It was discovered that libblkid in util-linux had a heap use-after-free vulnerability during nested partition probing. An attacker who could present a crafted block device image could possibly use this issue to obtain sensitive information or cause a denial of service. CVE-2026-13595 It was...

USN-8701-1 udisks2 vulnerability

It was discovered that UDisks did not correctly validate the caller identity when handling the as-user option in the org.freedesktop.UDisks2.Filesystem.Mount D-Bus method. A local attacker with an active console session could possibly use this issue to mount filesystems on behalf of arbitrary...

USN-8678-3 openssl vulnerability

USN-8673-1 fixed vulnerabilities in OpenSSL. The update inadvertently left out the fix for CVE-2026-75803 in Ubuntu 26.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that OpenSSL incorrectly handled the QUIC server incoming...

USN-8700-1 mysql-8.0, mysql-8.4 vulnerabilities

Multiple security issues were discovered in MySQL. MySQL has been updated to 8.4.11 in Ubuntu 26.04 LTS. Ubuntu 22.04 LTS and Ubuntu 24.04 LTS packages have been updated with backported patches. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly...

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-8698-1 freerdp3 vulnerabilities

It was discovered that FreeRDP contained multiple security issues. An attacker could possibly use these issues to obtain sensitive information, cause FreeRDP to crash, resulting in a denial of service, or execute arbitrary code...

USN-8697-1 coreutils vulnerabilities

It was discovered that GNU Core Utilities sort had a heap buffer under-read in its begfield function. A local attacker could possibly use this issue to cause GNU Core Utilities to crash, resulting in a denial of service, or obtain sensitive information. CVE-2025-5278 It was discovered that GNU Co...

USN-8696-1 bind9 vulnerability

It was discovered that Bind incorrectly handled DNSSEC validation when a domain was covered by both NSEC and NSEC3 records with only one type having an RRSIG. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service...

USN-8695-1 openjdk-25-crac vulnerabilities

It was discovered that the JSSE component of CRaC JDK 25 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. CVE-2026-46968 It was discovered that the JSSE component of CRaC JDK 25 did not correctly authorize users. A remote...

USN-8694-1 openjdk-21-crac vulnerabilities

It was discovered that the JSSE component of CRaC JDK 21 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. CVE-2026-46968 It was discovered that the JSSE component of CRaC JDK 21 did not correctly authorize users. A remote...

USN-8693-1 openjdk-17-crac vulnerabilities

It was discovered that the JSSE component of CRaC JDK 17 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. CVE-2026-46968 It was discovered that the JSSE component of CRaC JDK 17 did not correctly authorize users. A remote...

USN-8692-1 diffutils vulnerability

It was discovered that GNU diffutils incorrectly handled certain integer arithmetic when mapping line ranges in diff3. A local attacker could possibly use this issue to cause diff3 to crash, resulting in a denial of service...

USN-8691-1 attr vulnerability

It was discovered that attr incorrectly handled symbolic links while traversing directory paths. A local attacker who controlled a pathname component could possibly use this issue to redirect privileged attr operations to arbitrary files and gain elevated privileges...

USN-8689-1 openjdk-26 vulnerabilities

It was discovered that the JSSE component of OpenJDK 26 did not correctly authenticate users. A remote attacker could possibly use this issue to read or modify sensitive data. CVE-2026-46968 It was discovered that the JSSE component of OpenJDK 26 did not correctly authorize users. A remote attack...

USN-8666-3 linux-gcp-fips 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-8644-3 linux-azure, linux-azure-4.15, linux-azure-fips 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: - File systems infrastructure; - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - SCTP protocol; - TIPC protocol...

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-8658-4 linux-azure-fde-5.15 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: - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-64531...

USN-8643-5 linux-azure-6.8, linux-ibm, linux-ibm-6.8, linux-oracle-6.8, 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: - Network drivers; - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531...

USN-8688-1 pam vulnerability

Juthawong Naisanguansee discovered that PAM incorrectly cleared failed login attempt records when certain services invoked the account phase without first performing authentication. An attacker could possibly use this issue to reset failed login counters, resulting in authentication lockout...

USN-8687-1 p11-kit vulnerabilities

It was discovered that p11-kit incorrectly handled certain RPC messages. A local attacker could use this issue to cause p11-kit to crash, resulting in a denial of service. CVE-2026-13757 It was discovered that p11-kit incorrectly handled nested attribute decoding on 32-bit systems. A local attack...

USN-8686-1 opencryptoki vulnerabilities

It was discovered that primitive decoders in openCryptoki produced integer underflows when the encoded length was zero. An attacker could possibly use this issue to trigger out-of-bounds reads. CVE-2026-40253 It was discovered that openCryptoki incorrectly handled symlinks. An attacker in the...

USN-8685-1 bzip2 vulnerability

It was discovered that bzip2 did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause a crash, resulting in a denial of service...

USN-8684-1 perl vulnerabilities

It was discovered that Perl incorrectly handled certain arguments to Socket and pack/unpack functions. An attacker could possibly use this issue to read sensitive information from memory. CVE-2026-12087, CVE-2026-57432 It was discovered that Perl incorrectly handled regular expressions with a lar...