Skip to main content

CVE-2025-31115

HIGH
Race Condition within a Thread (CWE-366)
2025-04-03 security-advisories@github.com
Denial Of Service
8.7
CVSS 4.0 · GitHub Advisory
View

Vulnerability Assessment

Weakness
CWE
CWE-366
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Shared resource synchronization
Impact

CVSS score of 8.7 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.26%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.
This Week Schedule remediation this week. Why: Active threat signals + CRITICAL/HIGH severity.
Patch available 0.3% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 28, 2026

XZ Utils provide a general-purpose data-compression library plus command-line tools. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected ProductsAI

See vendor advisory for affected versions.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Sign in to check
Technical ContextAI · show details

This vulnerability is classified under CWE-366. XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzma_stream_decoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.

Know when the next one hits your stack

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources
Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

GitHub Advisory PRIMARY 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE 8.2 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Red Hat 7.5 HIGH

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch released
Apr 05, 2026 - 20:30 nvd
Patch available
CVE Published
Apr 03, 2025 - 17:15 nvd
HIGH 8.7

DescriptionGitHub Advisory

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the null pointer plus an offset. Applications and libraries that use the lzma_stream_decoder_mt function are affected. The bug has been fixed in XZ Utils 5.8.1, and the fix has been committed to the v5.4, v5.6, v5.8, and master branches in the xz Git repository. No new release packages will be made from the old stable branches, but a standalone patch is available that applies to all affected releases.

Executive ViewAI

Why It Matters

CVE-2025-31115 presents significant security risk rated CVSS 8.7. Successful exploitation could significantly impact the confidentiality, integrity, or availability of affected systems. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score
0.3%
Top 51% exploitable
Threat Intel
1
1 source
Data Quality
5 sources
Confidence: Medium
NVD CVE.org EPSS CISA Vendor GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat Yes
Deciding rule
Active threat signals + CRITICAL/HIGH severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

54
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: +10
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Same weakness CWE-366 – Race Condition within a Thread

View all
CVE-2026-22819 MEDIUM POC
5.9
CVE-2023-4127 MEDIUM POC
5.9
CVE-2025-58143 CRITICAL
9.8
CVE-2023-3218 MEDIUM POC
4.4
CVE-2026-25687 HIGH
8.1
CVE-2021-26569 HIGH
8.1
CVE-2026-46181 HIGH
7.8
CVE-2026-86247 HIGH
7.4

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

Vendor StatusVendor

SUSE

Severity: High
Product Status
Container bci/gcc:latest Container bci/golang:1.23.10-2.7.6 Container bci/golang:1.24.3-openssl-12.1 Container bci/golang:oldstable-openssl-11.6 Container bci/nodejs:22.13.1-31.40 Container bci/openjdk-devel:17.0.15.0-7.6 Container bci/openjdk-devel:25.0.1.0-2.1 Container bci/openjdk:17.0.15.0-7.6 Container bci/openjdk:25.0.1.0-2.1 Container bci/php-fpm:8.3.19-10.1 Container bci/php:8.3.19-10.1 Container bci/python:3.6.15-2.3 Container bci/ruby:latest Container bci/rust:1.86.0-2.2.6 Container bci/rust:1.87.0-1.3.1 Container containers/lmcache-lmstack-router:0.1.6-1.2 Container containers/lmcache-vllm-openai:0.3.2-1.2 Container containers/milvus:2.4.6-7.81 Container containers/ollama:0.6.2-8.4 Container containers/open-webui-mcpo:0.0.17-1.1 Container containers/open-webui-pipelines:0.20250329.151219-3.2 Container containers/open-webui:0.5.14-9.23 Container containers/pytorch:2.5.0-nvidia-1.34 Container containers/vllm-openai:0.9.1-1.2 Container private-registry/harbor-core:1.1.0-1.1 Container private-registry/harbor-db:2.12.2-2.16 Container private-registry/harbor-exporter:1.1.0-1.1 Container private-registry/harbor-jobservice:1.1.0-1.1 Container private-registry/harbor-nginx:1.21.5-2.15 Container private-registry/harbor-portal:1.1.0-1.1 Container private-registry/harbor-registry:1.1.0-1.1 Container private-registry/harbor-registryctl:1.1.0-1.1 Container private-registry/harbor-trivy-adapter:1.1.0-1.1 Container private-registry/harbor-valkey:8.0.2-2.17 Container suse/389-ds:2.5.3-61.1 Container suse/bind:9-36.5 Container suse/cosign:2.5.0-7.1 Container suse/git:2 Container suse/helm:3.17.3-8.1 Container suse/kiosk/firefox-esr:esr Container suse/kiosk/pulseaudio:17 Container suse/manager/5.0/x86_64/proxy-salt-broker:5.0.4.7.19.1 Container suse/manager/5.0/x86_64/proxy-squid:5.0.4.7.17.1 Container suse/manager/5.0/x86_64/proxy-ssh:5.0.4.7.17.1 Container suse/manager/5.0/x86_64/proxy-tftpd:5.0.4.7.17.1 Container suse/manager/5.0/x86_64/server-attestation:5.0.4.6.14.1 Container suse/manager/5.0/x86_64/server-migration-14-16:5.0.4.7.14.1 Container suse/mariadb-client:10.11 Container suse/mariadb:10.11 Container suse/multi-linux-manager/5.1/x86_64/proxy-squid:5.1.0.6.21 Container suse/multi-linux-manager/5.1/x86_64/proxy-ssh:5.1.0.6.20 Container suse/multi-linux-manager/5.1/x86_64/proxy-tftpd:5.1.0.6.19 Container suse/multi-linux-manager/5.1/x86_64/server-attestation:5.1.0.6.20 Container suse/multi-linux-manager/5.1/x86_64/server-migration-14-16:5.1.0.6.27 Container suse/multi-linux-manager/5.1/x86_64/server-postgresql:5.1.2.6.13.1 Container suse/multi-linux-manager/5.1/x86_64/server-saline:5.1.2.9.13.1 Container suse/nginx:1.21-51.50 Container suse/pcp:6 Container suse/postgres:16.9-13.5 Container suse/postgres:18.1-61.1 Container suse/registry:2.8 Container suse/rmt-server:2.21-9.1 Container suse/sles/15.7/cdi-apiserver:1.58.0.27.140 Container suse/sles/15.7/cdi-cloner:1.58.0.28.140 Container suse/sles/15.7/cdi-controller:1.58.0.27.140 Container suse/sles/15.7/cdi-importer:1.58.0.29.110 Container suse/sles/15.7/cdi-operator:1.58.0.27.140 Container suse/sles/15.7/cdi-uploadproxy:1.58.0.27.140 Container suse/sles/15.7/cdi-uploadserver:1.58.0.28.153 Container suse/sles/15.7/pr-helper:1.5.0.22.9 Container suse/sles/15.7/virt-api:1.5.0.27.139 Container suse/sles/15.7/virt-controller:1.5.0.27.139 Container suse/sles/15.7/virt-exportproxy:1.5.0.11.139 Container suse/sles/15.7/virt-exportserver:1.5.0.12.139 Container suse/sles/15.7/virt-handler:1.5.0.30.10 Container suse/sles/15.7/virt-operator:1.5.0.27.139 Container suse/stunnel:5.70-61.1 Container suse/valkey:8.0.2-38.4 Container trento/trento-wanda:1.5.0-build1.29.1 Container trento/trento-web:2.5.0-build4.52.1 Image ai_15_6 Image pr_15_6 Image pr_15_7 Image proxy-squid-image Image proxy-ssh-image Image proxy-tftpd-image Image server-attestation-image Image server-database-migration-image Image server-migration-14-16-image Image server-postgresql-image Image server-saline-image Affected
Container bci/kiwi:9.24.43-10.1 Container bci/spack:0.23.1-12.3 Image SLES15-SP6-SAP Image SLES15-SP6-SAP-Azure Image SLES15-SP6-SAP-EC2 Image SLES15-SP6-SAP-GCE Image SLES15-SP6-SAPCAL Image SLES15-SP6-SAPCAL-Azure Image SLES15-SP6-SAPCAL-EC2 Image SLES15-SP6-SAPCAL-GCE Image SLES15-SP7-SAPCAL-Azure Image SLES15-SP7-SAPCAL-EC2 Image SLES15-SP7-SAPCAL-GCE Affected
Container bci/php-apache:8.3.19-10.1 Container suse/hpc/warewulf4-x86_64/sle-hpc-node:15.7.20.5.1 Container suse/kiosk/xorg:21 Container suse/manager/5.0/x86_64/proxy-httpd:5.0.4.7.14.1 Container suse/manager/5.0/x86_64/server-hub-xmlrpc-api:5.0.4.6.14.1 Container suse/manager/5.0/x86_64/server:5.0.4.7.19.1 Container suse/multi-linux-manager/5.1/x86_64/proxy-httpd:5.1.0.6.27 Container suse/multi-linux-manager/5.1/x86_64/proxy-salt-broker:5.1.0.7.32 Container suse/multi-linux-manager/5.1/x86_64/server-hub-xmlrpc-api:5.1.0.6.21 Container suse/multi-linux-manager/5.1/x86_64/server:5.1.0.6.40 Container suse/sles/15.7/libguestfs-tools:1.5.0.28.178 Container suse/sles/15.7/virt-launcher:1.5.0.34.138 Image SLES15-SP6 Image SLES15-SP6-Azure-3P Image SLES15-SP6-Azure-Basic Image SLES15-SP6-Azure-Standard Image SLES15-SP6-BYOS Image SLES15-SP6-BYOS-Azure Image SLES15-SP6-BYOS-EC2 Image SLES15-SP6-BYOS-GCE Image SLES15-SP6-CHOST-BYOS Image SLES15-SP6-CHOST-BYOS-Aliyun Image SLES15-SP6-CHOST-BYOS-Azure Image SLES15-SP6-CHOST-BYOS-EC2 Image SLES15-SP6-CHOST-BYOS-GCE Image SLES15-SP6-CHOST-BYOS-GDC Image SLES15-SP6-CHOST-BYOS-SAP-CCloud Image SLES15-SP6-EC2 Image SLES15-SP6-EC2-ECS-HVM Image SLES15-SP6-GCE Image SLES15-SP6-HPC Image SLES15-SP6-HPC-Azure Image SLES15-SP6-HPC-BYOS Image SLES15-SP6-HPC-BYOS-Azure Image SLES15-SP6-HPC-BYOS-EC2 Image SLES15-SP6-HPC-BYOS-GCE Image SLES15-SP6-HPC-EC2 Image SLES15-SP6-HPC-GCE Image SLES15-SP6-Hardened-BYOS Image SLES15-SP6-Hardened-BYOS-Azure Image SLES15-SP6-Hardened-BYOS-EC2 Image SLES15-SP6-Hardened-BYOS-GCE Image SLES15-SP6-SAP-Azure-3P Image SLES15-SP6-SAP-Azure-LI-BYOS Image SLES15-SP6-SAP-Azure-LI-BYOS-Production Image SLES15-SP6-SAP-Azure-VLI-BYOS Image SLES15-SP6-SAP-Azure-VLI-BYOS-Production Image SLES15-SP6-SAP-BYOS Image SLES15-SP6-SAP-BYOS-Azure Image SLES15-SP6-SAP-BYOS-EC2 Image SLES15-SP6-SAP-BYOS-GCE Image SLES15-SP6-SAP-Hardened Image SLES15-SP6-SAP-Hardened-Azure Image SLES15-SP6-SAP-Hardened-BYOS Image SLES15-SP6-SAP-Hardened-BYOS-Azure Image SLES15-SP6-SAP-Hardened-BYOS-EC2 Image SLES15-SP6-SAP-Hardened-BYOS-GCE Image SLES15-SP6-SAP-Hardened-EC2 Image SLES15-SP6-SAP-Hardened-GCE Image SLES15-SP7-Azure-3P Image SLES15-SP7-Azure-Basic Image SLES15-SP7-Azure-Standard Image SLES15-SP7-BYOS-Azure Image SLES15-SP7-BYOS-EC2 Image SLES15-SP7-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-Aliyun Image SLES15-SP7-CHOST-BYOS-Azure Image SLES15-SP7-CHOST-BYOS-EC2 Image SLES15-SP7-CHOST-BYOS-GCE Image SLES15-SP7-CHOST-BYOS-GDC Image SLES15-SP7-CHOST-BYOS-SAP-CCloud Image SLES15-SP7-EC2 Image SLES15-SP7-EC2-ECS-HVM Image SLES15-SP7-GCE Image SLES15-SP7-GCE-3P Image SLES15-SP7-HPC-Azure Image SLES15-SP7-HPC-BYOS-Azure Image SLES15-SP7-HPC-BYOS-EC2 Image SLES15-SP7-HPC-BYOS-GCE Image SLES15-SP7-Hardened-BYOS-Azure Image SLES15-SP7-Hardened-BYOS-EC2 Image SLES15-SP7-Hardened-BYOS-GCE Image SLES15-SP7-SAP-Azure Image SLES15-SP7-SAP-Azure-3P Image SLES15-SP7-SAP-Azure-LI-BYOS-Production Image SLES15-SP7-SAP-Azure-VLI-BYOS-Production Image SLES15-SP7-SAP-BYOS-Azure Image SLES15-SP7-SAP-BYOS-EC2 Image SLES15-SP7-SAP-BYOS-GCE Image SLES15-SP7-SAP-EC2 Image SLES15-SP7-SAP-GCE Image SLES15-SP7-SAP-GCE-3P Image SLES15-SP7-SAP-Hardened-Azure Image SLES15-SP7-SAP-Hardened-BYOS-Azure Image SLES15-SP7-SAP-Hardened-BYOS-EC2 Image SLES15-SP7-SAP-Hardened-BYOS-GCE Image SLES15-SP7-SAP-Hardened-GCE Image proxy-httpd-image Image proxy-salt-broker-image Image server-hub-xmlrpc-api-image Image server-image Affected
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.70 Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.61 Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.72 Container suse/sl-micro/6.0/toolbox:13.2-9.22 Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.59 Container suse/sl-micro/6.1/base-os-container:2.2.1-5.80 Container suse/sl-micro/6.1/kvm-os-container:2.2.1-5.85 Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.73 Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.37 Affected

Threat IntelligenceMISP

CISA Advisories
ICSA-26-181-05
Sources: CISA (public domain)

References

Advisories & patches
ADVISORY https://access.redhat.com/errata/RHSA-2025:7524 ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:1137/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:14984/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20553/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20590/ REF http://www.openwall.com/lists/oss-security/2025/04/03/1 REF http://www.openwall.com/lists/oss-security/2025/04/03/2 REF http://www.openwall.com/lists/oss-security/2025/04/03/3 REF https://cert-portal.siemens.com/productcert/html/ssa-082556.html REF https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480 REF https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2 REF https://tukaani.org/xz/xz-cve-2025-31115.patch

Search Externally

GitHub PoC Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy