Affected: AlmaLinux:8: tomcat, AlmaLinux:8: tomcat-admin-webapps, AlmaLinux:8: tomcat-docs-webapp, AlmaLinux:8: tomcat-el-3.0-api, AlmaLinux:8: tomcat-jsp-2.3-api, AlmaLinux:8: tomcat-lib, AlmaLinux:8: tomcat-servlet-4.0-api, AlmaLinux:8: tomcat-webapps

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

* tomcat: Apache Tomcat DoS in multipart upload (CVE-2025-48988) * tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources (CVE-2025-49125) * apache-commons-fileupload: Apache Commons FileUpload DoS via part headers (CVE-2025-48976) * tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames (CVE-2025-48989) * tomcat: Apache Tomcat denial of service (CVE-2025-52520) * tomcat: Apache Tomcat denial of service (CVE-2025-52434) * tomcat: Apache Tomcat denial of service (CVE-2025-53506)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected: Bitnami: tomcat

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.

This issue affects Apache Tomcat: from 11.0.0 through 11.0.9, from 10.1.0 through 10.1.43 and from 9.0.0 through 9.0.107. Older, EOL versions may also be affected.

Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.

Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

Affected: Maven: org.apache.tomcat:tomcat-coyote, Maven: org.apache.tomcat.embed:tomcat-embed-core

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.

Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check link_res->hpo_dp_link_enc before using it [WHAT & HOW] Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res without initializing hpo_dp_link_enc and it is necessary to check for null before dereferencing. This fixes 2 FORWARD_NULL issues reported by Coverity. In the Linux kernel, the following vulnerability has been resolved:

fs: relax assertions on failure to encode file handles

Encoding file handles is usually performed by a filesystem >encode_fh() method that may fail for various reasons.

The legacy users of exportfs_encode_fh(), namely, nfsd and name_to_handle_at(2) syscall are ready to cope with the possibility of failure to encode a file handle.

There are a few other users of exportfs_encode_{fh,fid}() that currently have a WARN_ON() assertion when ->encode_fh() fails. Relax those assertions because they are wrong.

The second linked bug report states commit 16aac5ad1fa9 ("ovl: support encoding non-decodable file handles") in v6.6 as the regressing commit, but this is not accurate.

The aforementioned commit only increases the chances of the assertion and allows triggering the assertion with the reproducer using overlayfs, inotify and drop_caches.

Triggering this assertion was always possible with other filesystems and other reasons of ->encode_fh() failures and more particularly, it was also possible with the exact same reproducer using overlay…

Affected: openEuler:20.03-LTS-SP4: tomcat

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fix(es):

Apache Tomcat is vulnerable to the made you reset attack due to an Improper Resource Shutdown or Release vulnerability. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected.(CVE-2025-48989)

Session Fixation vulnerability in Apache Tomcat via rewrite valve.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.(CVE-2025-55668)

tomcat-9.0.108-1.1 on GA media

tomcat: http/2 "MadeYouReset" DoS attack through HTTP/2 control frames tomcat: Apache Tomcat denial of service

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check link_res->hpo_dp_link_enc before using it [WHAT & HOW] Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res without initializing hpo_dp_link_enc and it is necessary to check for null before dereferencing. This fixes 2 FORWARD_NULL issues reported by Coverity. In the Linux kernel, the following vulnerability has been resolved:

fs: relax assertions on failure to encode file handles

Encoding file handles is usually performed by a filesystem >encode_fh() method that may fail for various reasons.

The legacy users of exportfs_encode_fh(), namely, nfsd and name_to_handle_at(2) syscall are ready to cope with the possibility of failure to encode a file handle.

There are a few other users of exportfs_encode_{fh,fid}() that currently have a WARN_ON() assertion when ->encode_fh() fails. Relax those assertions because they are wrong.

The second linked bug report states commit 16aac5ad1fa9 ("ovl: support encoding non-decodable file handles") in v6.6 as the regressing commit, but this is not accurate.

The aforementioned commit only increases the chances of the assertion and allows triggering the assertion with the reproducer using overlayfs, inotify and drop_caches.

Triggering this assertion was always possible with other filesystems and other reasons of ->encode_fh() failures and more particularly, it was also possible with the exact same reproducer using overlay…

Security update for tomcat

Affected: Ubuntu:Pro:14.04:LTS: tomcat6, Ubuntu:Pro:18.04:LTS: tomcat8, Ubuntu:Pro:18.04:LTS: tomcat9, Ubuntu:Pro:20.04:LTS: tomcat9, Ubuntu:Pro:22.04:LTS: tomcat9, Ubuntu:24.04:LTS: tomcat10, Ubuntu:25.10: tomcat10, Ubuntu:25.10: tomcat11, Ubuntu:26.04:LTS: tomcat10, Ubuntu:26.04:LTS: tomcat11

Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiednen http/2 Implementierungen ausnutzen, um einen Denial of Service Angriff durchzuführen.