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172
security advisorydenial of servicebuffer overflowUbuntu 24.04 LTS FreeRDP Denial of Service Regression USN-8004-2
USN-8004-1 introduced a regression in FreeRDP. ========================================================================== Ubuntu Security Notice USN-8004-2 February 08, 2026 freerdp2 regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: USN-8004-1 introduced a regression in FreeRDP Software Description: - freerdp2: RDP client for Windows Terminal Services Details: USN-8004-1 fixed vulnerabilities in FreeRDP. The update for CVE-2026-23533 introduced a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Kim Dong Han discovered that FreeRDP did not correctly validate the size of certain variables, which could cause a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS libfreerdp2-2t64 2.11.5+dfsg1-1ubuntu0.1~esm4 Available with Ubuntu Pro Ubuntu 22.04 LTS libfreerdp2-2 2.6.1+dfsg1-3ubuntu2.9 Ubuntu 20.04 LTS libfreerdp2-2 2.6.1+dfsg1-0ubuntu0.20.04.2+esm2 Available with Ubuntu Pro Ubuntu 18.04 LTS libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm4 Available with Ubuntu Pro After a standard system update you need to restart your session to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8004-2 https://ubuntu.com/security/notices/USN-8004-1 CVE-2026-23533, Package Information: . Update to Ubuntu 24.04 to fix regression issue in FreeRDP. Restore proper functionality post-update and prevent service disruptions.. Ubuntu, FreeRDP, security fix, denial ofservice, buffer overflow. . Severity: Important. LinuxSecurity.com Team
Feb 09, 2026
•Important
Ubuntu
172
security advisorydenial of serviceubuntuUbuntu 22.10 USN-5855-3 Critical: ImageMagick Regression Issue
USN-5855-1 introduced a regression in ImageMagick.. =========================================================================Ubuntu Security Notice USN-5855-3 March 31, 2023 imagemagick regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: USN-5855-1 introduced a regression in ImageMagick. Software Description: - imagemagick: Image manipulation programs and library Details: USN-5855-2 fixed vulnerabilities in ImageMagick. Unfortunately an additional mitigation caused a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that ImageMagick incorrectly handled certain PNG images. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause ImageMagick to stop responding, resulting in a denial of service, or possibly obtain the contents of arbitrary files by including them into images. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: imagemagick 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 imagemagick-6.q16 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 libmagick++-6.q16-8 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 libmagickcore-6.q16-6 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 libmagickcore-6.q16-6-extra 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 Ubuntu 22.04 LTS: imagemagick 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 imagemagick-6.q16 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 libmagick++-6.q16-8 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 libmagickcore-6.q16-6 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 libmagickcore-6.q16-6-extra 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 Ubuntu 20.04 LTS: imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.7 imagemagick-6.q16 8:6.9.10.23+dfsg-2.1ubuntu11.7 libmagick++-6.q16-8 8:6.9.10.23+dfsg-2.1ubuntu11.7 libmagickcore-6.q16-6 8:6.9.10.23+dfsg-2.1ubuntu11.7 libmagickcore-6.q16-6-extra 8:6.9.10.23+dfsg-2.1ubuntu11.7 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5855-1 https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/2004580 Package Information: https://launchpad.net/ubuntu/+source/imagemagick/8:6.9.11.60+dfsg-1.3ubuntu0.22.10.4 https://launchpad.net/ubuntu/+source/imagemagick/8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3 https://launchpad.net/ubuntu/+source/imagemagick/8:6.9.10.23+dfsg-2.1ubuntu11.7 . Attention Ubuntu users: A regression in ImageMagick affects certain image formats, posing potential vulnerabilities. Immediate action to update is vital. Ubuntu Security Notice, ImageMagick Regression, Denial of Service. . Severity: Critical. LinuxSecurity.com Team
Mar 31, 2023
•Critical
Ubuntu
172
security advisorysoftware updateMySQLUbuntu 22.10: USN-5823-3 Moderate: MySQL Connection Regression
USN 5823-1 introduced a regression in MySQL.. =========================================================================Ubuntu Security Notice USN-5823-3 January 29, 2023 mysql-5.7, mysql-8.0 regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: USN 5823-1 introduced a regression in MySQL. Software Description: - mysql-8.0: MySQL database Details: USN-5823-1 fixed vulnerabilities in MySQL. Unfortunately, 8.0.32 introduced a regression in MySQL Router preventing connections from PyMySQL. This update reverts most of the changes in MySQL Router to 8.0.31 until a proper fix can be found. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 8.0.32 in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 22.10. Ubuntu 18.04 LTS has been updated to MySQL 5.7.41. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-41.html https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-32.html https://www.oracle.com/security-alerts/cpujan2023.html Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: mysql-server-8.0 8.0.32-0ubuntu0.22.10.2 Ubuntu 22.04 LTS: mysql-server-8.0 8.0.32-0ubuntu0.22.04.2 Ubuntu 20.04 LTS: mysql-server-8.0 8.0.32-0ubuntu0.20.04.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5823-3 https://ubuntu.com/security/notices/USN-5823-1 https://bugs.launchpad.net/ubuntu/+source/mysql-8.0/+bug/2003835 Package Information: https://launchpad.net/ubuntu/+source/mysql-8.0/8.0.32-0ubuntu0.22.10.2 https://launchpad.net/ubuntu/+source/mysql-8.0/8.0.32-0ubuntu0.22.04.2 https://launchpad.net/ubuntu/+source/mysql-8.0/8.0.32-0ubuntu0.20.04.2 . A flaw was reported in PostgreSQL affecting various editions in the Ubuntu Security Update USN-5822-5.. MySQL Update, Ubuntu Security, Software Regression. . Severity: Important. LinuxSecurity.com Team
Jan 29, 2023
•Important
Ubuntu
197
security advisorydebianapacheDebian 9: DLA-2768-2 Fixes uwsgi Regression Issue for Apache2
A regression was introduced in DLA-2768-1, where the uwsgi proxy module for Apache2 (mod_proxy_uwsgi) interprets incorrect Apache configurations in a less forgiving way, causing existing setups to fail after upgrade. . - ------------------------------------------------------------------------- Debian LTS Advisory DLA-2768-2
Oct 20, 2021
•Important
Debian LTS
172
security advisorysoftware fixsystem updateUbuntu 21.04: USN-5092-3 Moderate: Azure Kernel Boot Regression
USN-5092-2 introduced a regression in the Linux kernel for Microsoft Azure cloud systems.. =========================================================================Ubuntu Security Notice USN-5092-3 October 18, 2021 linux-azure, linux-azure-5.11 regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS Summary: USN-5092-2 introduced a regression in the Linux kernel for Microsoft Azure cloud systems. Software Description: - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-azure-5.11: Linux kernel for Microsoft Azure cloud systems Details: USN-5092-2 fixed vulnerabilities in Linux 5.11-based kernels. Unfortunately, for Linux kernels intended for use within Microsoft Azure environments, that update introduced a regression that could cause the kernel to fail to boot in large Azure instance types. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. (CVE-2021-41073) Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624) Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556) Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to exposesensitive information. (CVE-2021-35477) It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679) It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159) Alexey Kardashevskiy discovered that the KVM implementation for PowerPC systems in the Linux kernel did not properly validate RTAS arguments in some situations. An attacker in a guest vm could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code. (CVE-2021-37576) It was discovered that the Virtio console implementation in the Linux kernel did not properly validate input lengths in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38160) Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199) It was discovered that the Sun RPC implementation in the Linux kernel contained an out-of-bounds access error. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38201) It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204) It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205) Updateinstructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: linux-image-5.11.0-1019-azure 5.11.0-1019.20 linux-image-azure 5.11.0.1019.20 Ubuntu 20.04 LTS: linux-image-5.11.0-1019-azure 5.11.0-1019.20~20.04.1 linux-image-azure-edge 5.11.0.1019.20~20.04.18 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-5092-3 https://ubuntu.com/security/notices/USN-5092-1 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1940564, https://ubuntu.com/security/notices/USN-5092-2 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/5.11.0-1019.20 https://launchpad.net/ubuntu/+source/linux-azure-5.11/5.11.0-1019.20~20.04.1 . USN-5092-3 addresses a bug in the Linux kernel affecting Azure cloud environments following earlier patches.. Ubuntu Security Notice, Linux Kernel Update, Azure Regression Fix. . LinuxSecurity.com Team
Oct 18, 2021
Ubuntu
172
security advisorydenial of servicecriticalUbuntu 18.04 LTS USN-3809-2 Critical OpenSSH Regression Issue
USN-3809-1 introduced a regression in OpenSSH.. =========================================================================Ubuntu Security Notice USN-3809-2 August 12, 2021 openssh regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: USN-3809-1 introduced a regression in OpenSSH. Software Description: - openssh: secure shell (SSH) for secure access to remote machines Details: USN-3809-1 fixed vulnerabilities in OpenSSH. The update for CVE-2018-15473 was incomplete and could introduce a regression in certain environments. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Robert Swiecki discovered that OpenSSH incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-10708) It was discovered that OpenSSH incorrectly handled certain requests. An attacker could possibly use this issue to access sensitive information. (CVE-2018-15473) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: openssh-server 1:7.6p1-4ubuntu0.5 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-3809-2 https://ubuntu.com/security/notices/USN-3809-1 https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1934501 Package Information: https://launchpad.net/ubuntu/+source/openssh/1:7.6p1-4ubuntu0.5 . Investigate the OpenSSH flaw highlighted in Ubuntu's security patch USN-3809-2 and its corrective measures for previous security weaknesses.. OpenSSH Update, Ubuntu Security Notice, Software Regression. . Severity: Critical. LinuxSecurity.com Team
Aug 12, 2021
•Critical
Ubuntu
172
security advisoryDoSUbuntuUbuntu 21.04: USN-4969-3 Moderate: isc-dhcp DoS Regression Issue
USN-4969-1 introduced a regression in DHCP.. =========================================================================Ubuntu Security Notice USN-4969-3 June 07, 2021 isc-dhcp regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 Summary: USN-4969-1 introduced a regression in DHCP. Software Description: - isc-dhcp: DHCP server and client Details: USN-4969-1 fixed a vulnerability in DHCP. The package for Ubuntu 21.04 introduced a regression causing it to reject certain valid configuration files. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Jon Franklin and Pawel Wieczorkiewicz discovered that DHCP incorrectly handled lease file parsing. A remote attacker could possibly use this issue to cause DHCP to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: isc-dhcp-client 4.4.1-2.2ubuntu6.2 isc-dhcp-server 4.4.1-2.2ubuntu6.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4969-1 https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1930917 Package Information: https://launchpad.net/ubuntu/+source/isc-dhcp/4.4.1-2.2ubuntu6.2 . This revision resolves a significant problem in isc-dhcp where the configuration files were being improperly denied, addressing an issue that emerged due to prior changes.. isc-dhcp, Ubuntu Update, security advisory, regression issues. . Severity: Important. LinuxSecurity.com Team
Jun 07, 2021
•Important
Ubuntu
172
security advisorydenial of servicecriticalUbuntu 20.04 LTS: USN-4916-2 Critical: Kernel Memory Leak Fix
USN-4916-1 introduced a regression in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-4916-2 April 21, 2021 linux, linux-aws, linux-gke-5.3, linux-hwe, linux-kvm, linux-lts-xenial, linux-oem-5.6, linux-raspi2-5.3, linux-snapdragon regression ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM Summary: USN-4916-1 introduced a regression in the Linux kernel. Software Description: - linux-oem-5.6: Linux kernel for OEM systems - linux-gke-5.3: Linux kernel for Google Container Engine (GKE) systems - linux-hwe: Linux hardware enablement (HWE) kernel - linux-raspi2-5.3: Linux kernel for Raspberry Pi (V8) systems - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-kvm: Linux kernel for cloud environments - linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty Details: USN-4916-1 fixed vulnerabilities in the Linux kernel. Unfortunately, the fix for CVE-2021-3493 introduced a memory leak in some situations. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. (CVE-2021-3493) Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-29154) Update instructions: The problem can be corrected by updating your system to the following packageversions: Ubuntu 20.04 LTS: linux-image-5.6.0-1055-oem 5.6.0-1055.59 linux-image-oem-20.04 5.6.0.1055.51 Ubuntu 18.04 LTS: linux-image-5.3.0-1040-raspi2 5.3.0-1040.42 linux-image-5.3.0-1043-gke 5.3.0-1043.46 linux-image-5.3.0-74-generic 5.3.0-74.70 linux-image-5.3.0-74-lowlatency 5.3.0-74.70 linux-image-gke-5.3 5.3.0.1043.26 linux-image-gkeop-5.3 5.3.0.74.131 linux-image-raspi2-hwe-18.04 5.3.0.1040.29 Ubuntu 16.04 LTS: linux-image-4.4.0-1093-kvm 4.4.0-1093.102 linux-image-4.4.0-1128-aws 4.4.0-1128.142 linux-image-4.4.0-1156-snapdragon 4.4.0-1156.166 linux-image-4.4.0-210-generic 4.4.0-210.242 linux-image-4.4.0-210-generic-lpae 4.4.0-210.242 linux-image-4.4.0-210-lowlatency 4.4.0-210.242 linux-image-4.4.0-210-powerpc-e500mc 4.4.0-210.242 linux-image-4.4.0-210-powerpc-smp 4.4.0-210.242 linux-image-4.4.0-210-powerpc64-emb 4.4.0-210.242 linux-image-4.4.0-210-powerpc64-smp 4.4.0-210.242 linux-image-aws 4.4.0.1128.133 linux-image-generic 4.4.0.210.216 linux-image-generic-lpae 4.4.0.210.216 linux-image-kvm 4.4.0.1093.91 linux-image-lowlatency 4.4.0.210.216 linux-image-powerpc-e500mc 4.4.0.210.216 linux-image-powerpc-smp 4.4.0.210.216 linux-image-powerpc64-emb 4.4.0.210.216 linux-image-powerpc64-smp 4.4.0.210.216 linux-image-snapdragon 4.4.0.1156.148 linux-image-virtual 4.4.0.210.216 Ubuntu 14.04 ESM: linux-image-4.4.0-1092-aws 4.4.0-1092.96 linux-image-4.4.0-210-generic 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-generic-lpae 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-lowlatency 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-powerpc-e500mc 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-powerpc-smp 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-powerpc64-emb 4.4.0-210.242~14.04.1 linux-image-4.4.0-210-powerpc64-smp 4.4.0-210.242~14.04.1 linux-image-aws 4.4.0.1092.89 linux-image-generic-lpae-lts-xenial 4.4.0.210.183 linux-image-generic-lts-xenial 4.4.0.210.183 linux-image-lowlatency-lts-xenial 4.4.0.210.183 linux-image-powerpc-e500mc-lts-xenial 4.4.0.210.183 linux-image-powerpc-smp-lts-xenial 4.4.0.210.183 linux-image-powerpc64-emb-lts-xenial 4.4.0.210.183 linux-image-powerpc64-smp-lts-xenial 4.4.0.210.183 linux-image-virtual-lts-xenial 4.4.0.210.183 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-4916-2 https://ubuntu.com/security/notices/USN-4916-1 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1924611 Package Information: https://launchpad.net/ubuntu/+source/linux-oem-5.6/5.6.0-1055.59 https://launchpad.net/ubuntu/+source/linux-gke-5.3/5.3.0-1043.46 https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-74.70 https://launchpad.net/ubuntu/+source/linux-raspi2-5.3/5.3.0-1040.42 https://launchpad.net/ubuntu/+source/linux/4.4.0-210.242 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1128.142 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1093.102 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1156.166 . Tackling a significant setback in the Linux kernel impacting numerous Ubuntu distributions and providing solutions.. Ubuntu Kernel Update, Linux Security Notice, Memory Leak Fix. . Severity: Critical. LinuxSecurity.com Team
Apr 21, 2021
•Critical
Ubuntu
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