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-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-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-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-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-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-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-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-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-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-8683-1 libheif vulnerabilities

Feng Ning discovered that libheif incorrectly handled certain image transforms. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. CVE-2026-62289 Ali Firas discovered that libheif...

USN-8682-1 bind9 vulnerabilities

Vitaly Simonovich discovered that Bind could exhaust memory during GSS-API TKEY negotiation. A remote attacker could possibly use this issue to cause Bind to use excessive resources, leading to a denial of service. CVE-2026-3039 Shuhan Zhang discovered that Bind incorrectly handled self-pointed...

USN-8681-1 openjdk-25 vulnerabilities

It was discovered that the JSSE component of OpenJDK 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 OpenJDK 25 did not correctly authorize users. A remote attack...

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-8658-3 linux-azure, linux-azure-fde, linux-nvidia-tegra-igx 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-8679-1 vim vulnerability

It was discovered that Vim incorrectly handled certain tags files. An attacker could possibly use this issue to execute arbitrary code...

USN-8678-2 openssl, openssl1.0 vulnerabilities

USN-8678-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding fix for OpenSSL and OpenSSL 1.0 on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. In addition, this update also fixes the following issues that were not previously addressed in those releases: It was...

USN-8678-1 openssl vulnerabilities

It was discovered that OpenSSL incorrectly handled the QUIC server incoming channel queue. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. This issue only affected Ubuntu 26.04 LTS. CVE-2026-14456 It was discovered that...

USN-8677-1 openjdk-21 vulnerabilities

It was discovered that the JSSE component of OpenJDK 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 OpenJDK 21 did not correctly authorize users. A remote attack...

USN-8675-1 perl vulnerabilities

It was discovered that Perl incorrectly handled short source addresses in the Socket module. An attacker could possibly use this issue to trigger an out-of-bounds heap read, resulting in information disclosure. CVE-2026-12087 It was discovered that Perl incorrectly handled regular expressions...

USN-8672-1 sssd vulnerability

It was discovered that the SSSD PAM responder may crash if a physically proximate attacker manipulates a smartcard or Yubikey. Non-malicious physically proximate users may not be able to log in depending upon the details of their legitimate smartcard or Yubikey...

USN-8671-1 ffmpeg vulnerabilities

Adrian Junge was discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. CVE-2026-66036, CVE-2026-66039 Adrian Junge discovered that FFmpeg incorrectly handled certain media files. An attacke...

USN-8659-2 linux-hwe-7.0 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: - Open vSwitch;...

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-8664-1 linux-nvidia-bos vulnerabilities

It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. CVE-2025-54518 Several security issues...

USN-8663-1 linux-nvidia, linux-nvidia-7.0 vulnerabilities

It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. CVE-2025-54518 Several security issues...

USN-8662-1 linux, linux-aws, linux-kvm, linux-lts-xenial 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; - Cryptographic API; - InfiniBand drivers; - Media drivers; - STMicroelectronics network drivers;...

USN-8658-1 linux, linux-aws, linux-aws-fips, linux-azure-fips, linux-gkeop, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-oracle, linux-oracle-5.15, linux-realtime, 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: - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-64531...

USN-8657-1 vim vulnerabilities

It was discovered that Vim incorrectly handled memory when decoding certain JSON input. An attacker could possibly use this issue to cause Vim to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. CVE-2026-73071 Yazan Balawn...

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-8656-1 linux-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: - x86 architecture; - InfiniBand drivers; - Network drivers; - Mellanox network drivers; - File systems infrastructur...

USN-8543-2 wget regression

USN-8543-1 fixed vulnerabilities in Wget. The update for CVE-2026-58472 was incomplete and could introduce a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Wget mishandled semicolons in the userinfo subcomponent of ...

USN-8563-4 nginx regression

USN-8563-3 fixed a vulnerability in nginx. The fix introduced a regression in certain environments. This update reverts the fix for CVE-2026-42533 pending further investigation. We apologize for the inconvenience. Original advisory details: It was discovered that nginx incorrectly handled certain...

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-8650-1 capnproto vulnerabilities

Chanho Kim and Jihyeok Han discovered that Cap'n Proto incorrectly handled negative Content-Length values or excessively large chunk sizes when processing HTTP messages. An attacker could possibly use these issues to cause HTTP messages to be interpreted inconsistently, resulting in HTTP request ...

USN-8649-1 libheif vulnerabilities

It was discovered that libheif had an integer underflow in the Fraction constructor when a clap transform was applied twice. An attacker could possibly use this issue to cause libheif to crash, resulting in a denial of service. CVE-2026-62289 It was discovered that libheif had an out-of-bounds re...

USN-8563-3 nginx vulnerability

USN-8563-1 fixed vulnerabilities in nginx. The fix for CVE-2026-42533 was backed out in USN-8563-2 because it could cause a regression. This update includes a better fix for CVE-2026-42533. We apologize for the inconvenience. Original advisory details: It was discovered that nginx incorrectly...

USN-8093-2 libssh vulnerability

USN-8093-1 fixed a vulnerability in libssh. This update provides the corresponsing fix for Ubuntu 26.04 LTS. Original advisory details: It was discovered that libssh incorrectly performed bounds checking when processing SFTP extensions. If a client application queried extension data out of bounds...

USN-8113-2 tiff vulnerabilities

USN 8113-1 fixed vulnerabilities in tiff. This update provides the corresponding fixes for Ubuntu 26.04 LTS. Original advisory details: It was discovered that LibTIFF did not properly handle memory when processing certain images. An attacker could possibly use this issue to cause LibTIFF to crash...

USN-8636-2 linux-oracle-6.17 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; - Media drivers; - Network drivers; - Mellanox network drivers; - Texas...