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Vulnerability Details :

CVE-2025-31115

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-03 Apr, 2025 | 16:57
Updated At-03 Apr, 2025 | 20:03
Rejected At-
Credits

XZ has a heap-use-after-free bug in threaded .xz decoder

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:03 Apr, 2025 | 16:57
Updated At:03 Apr, 2025 | 20:03
Rejected At:
▼CVE Numbering Authority (CNA)
XZ has a heap-use-after-free bug in threaded .xz decoder

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.

Affected Products
Vendor
tukaani-project
Product
xz
Versions
Affected
  • >= 5.3.3alpha, < 5.8.1
Problem Types
TypeCWE IDDescription
CWECWE-366CWE-366: Race Condition within a Thread
CWECWE-416CWE-416: Use After Free
CWECWE-476CWE-476: NULL Pointer Dereference
CWECWE-826CWE-826: Premature Release of Resource During Expected Lifetime
Type: CWE
CWE ID: CWE-366
Description: CWE-366: Race Condition within a Thread
Type: CWE
CWE ID: CWE-416
Description: CWE-416: Use After Free
Type: CWE
CWE ID: CWE-476
Description: CWE-476: NULL Pointer Dereference
Type: CWE
CWE ID: CWE-826
Description: CWE-826: Premature Release of Resource During Expected Lifetime
Metrics
VersionBase scoreBase severityVector
4.08.7HIGH
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
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2
x_refsource_CONFIRM
https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480
x_refsource_MISC
https://tukaani.org/xz/xz-cve-2025-31115.patch
x_refsource_MISC
Hyperlink: https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480
Resource:
x_refsource_MISC
Hyperlink: https://tukaani.org/xz/xz-cve-2025-31115.patch
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
http://www.openwall.com/lists/oss-security/2025/04/03/1
N/A
http://www.openwall.com/lists/oss-security/2025/04/03/2
N/A
http://www.openwall.com/lists/oss-security/2025/04/03/3
N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/1
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/2
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/3
Resource: N/A
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:03 Apr, 2025 | 17:15
Updated At:07 Apr, 2025 | 14:18

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.7HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-366Secondarysecurity-advisories@github.com
CWE-416Secondarysecurity-advisories@github.com
CWE-476Secondarysecurity-advisories@github.com
CWE-826Secondarysecurity-advisories@github.com
CWE ID: CWE-366
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-416
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-476
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-826
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480security-advisories@github.com
N/A
https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2security-advisories@github.com
N/A
https://tukaani.org/xz/xz-cve-2025-31115.patchsecurity-advisories@github.com
N/A
http://www.openwall.com/lists/oss-security/2025/04/03/1af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2025/04/03/2af854a3a-2127-422b-91ae-364da2661108
N/A
http://www.openwall.com/lists/oss-security/2025/04/03/3af854a3a-2127-422b-91ae-364da2661108
N/A
Hyperlink: https://github.com/tukaani-project/xz/commit/d5a2ffe41bb77b918a8c96084885d4dbe4bf6480
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/tukaani-project/xz/security/advisories/GHSA-6cc8-p5mm-29w2
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://tukaani.org/xz/xz-cve-2025-31115.patch
Source: security-advisories@github.com
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/1
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/2
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://www.openwall.com/lists/oss-security/2025/04/03/3
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A

Change History

0
Information is not available yet

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