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3 vulnerabilities by tukaani-project
CVE-2026-34743 (GCVE-0-2026-34743)
Vulnerability from cvelistv5 – Published: 2026-04-02 18:36 – Updated: 2026-04-03 12:59
VLAI
Title
XZ Utils: Buffer overflow in lzma_index_append()
Summary
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tukaani-project/xz/security/ad… | x_refsource_CONFIRM |
| https://github.com/tukaani-project/xz/commit/c8c2… | x_refsource_MISC |
| https://github.com/tukaani-project/xz/releases/ta… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tukaani-project | xz |
Affected:
< 5.8.3
|
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CVE-2025-31115 (GCVE-0-2025-31115)
Vulnerability from cvelistv5 – Published: 2025-04-03 16:57 – Updated: 2026-05-12 12:04
VLAI
Title
XZ has a heap-use-after-free bug in threaded .xz decoder
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
7 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| tukaani-project | xz |
Affected:
>= 5.3.3alpha, < 5.8.1
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-47611 (GCVE-0-2024-47611)
Vulnerability from cvelistv5 – Published: 2024-10-02 14:16 – Updated: 2024-11-21 16:55
VLAI
Title
XZ Utils on Microsoft Windows platform are vulnerable to argument injection
Summary
XZ Utils provide a general-purpose data-compression library plus command-line tools. When built for native Windows (MinGW-w64 or MSVC), the command line tools from XZ Utils 5.6.2 and older have a command line argument injection vulnerability. If a command line contains Unicode characters (for example, filenames) that don't exist in the current legacy code page, the characters are converted to similar-looking characters with best-fit mapping. Some best-fit mappings result in ASCII characters that change the meaning of the command line, which can be exploited with malicious filenames to do argument injection or directory traversal attacks. This vulnerability is fixed in 5.6.3. Command line tools built for Cygwin or MSYS2 are unaffected. liblzma is unaffected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tukaani-project/xz/security/ad… | x_refsource_CONFIRM |
| https://github.com/tukaani-project/xz/commit/bf51… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| tukaani-project | xz |
Affected:
< 5.6.3
|
|
| tukaani | xz |
Affected:
0 , < 5.6.3
(custom)
cpe:2.3:a:tukaani:xz:*:*:*:*:*:*:*:* |
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