AI description
CVE-2025-31115 affects XZ Utils versions 5.3.3alpha to 5.8.0. It is a heap use-after-free bug found in the multithreaded decoder within the liblzma library. This vulnerability can be triggered by invalid input, potentially leading to a crash due to memory corruption. Specifically, the vulnerability occurs in the `lzma_stream_decoder_mt` function. Exploitation could result in "heap use after free and writing to an address based on the null pointer plus an offset," which may allow attackers to corrupt memory and potentially execute arbitrary code. A fix is available in XZ Utils version 5.8.1.
- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Deferred
CVSS 4.0
- Type
- Secondary
- Base score
- 8.7
- Impact score
- -
- Exploitability score
- -
- Vector string
- 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
- Severity
- HIGH
- security-advisories@github.com
- CWE-366
- Hype score
- Not currently trending
[CVE Analysis] CVE-2025-31115: XZ Utils Threaded Decompression Flaw Reaches B&R Industrial PCs and Controllers https://t.co/uSc5yxVQc4 #ICS #OTSecurity #SCADA #CriticalInfrastructure
@breachspider
1 Jul 2026
43 Impressions
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🚨 HIGH - XZ Utils liblzma multithreaded decoder UAF crash (CVE-2025-31115) CVE-2025-31115 is a flaw in XZ Utils’ liblzma multithreaded .xz decoder, specifically impacting applications using the lzma_stream_decoder_mt function. The root cause is a heap use-after-free combine
@UpwindMDR
30 Jun 2026
59 Impressions
0 Retweets
0 Likes
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0 Replies
0 Quotes
⚠️🧑💻Une vulnérabilité critique découverte dans Stormshield Network Security (SNS) versions < 5.0.4. Permet l'exécution de code arbitraire à distance et un déni de service. CVE-2025-31115. Mettez à jour migrez vite vers 5.0.4 ! Source: https://t.co/EpE
@justabreach
6 Jan 2026
76 Impressions
1 Retweet
1 Like
0 Bookmarks
1 Reply
0 Quotes
🚨 CRITICAL: CVE-2025-31115 affects #SUSE Linux Micro 6.1. CVSS: 8.8 (HIGH) Remote Code Execution risk via xz utils heap flaw. Read more: 👉 https://t.co/Gv7ZVLVkdV #Security https://t.co/BqIa9ZYemU
@Cezar_H_Linux
31 Aug 2025
60 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
‼️ ALERT: CVE-2025-31115 in XZ Utils threatens Linux security. Gentoo users: Patch NOW with: emerge --ask --oneshot ">=app-arch/xz-utils-5.6.4-r1" Details & enterprise tips: 👉https://t.co/igUQ4x1hOp #DevOps #PatchNow https://t.
@Cezar_H_Linux
6 May 2025
30 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
XZ Utilsのマルチスレッドデコーダーに深刻度の高い脆弱性：CVE-2025-31115 | Codebook https://t.co/H1ZxpPvkHe #izumino_trend
@sec_trend
7 Apr 2025
46 Impressions
0 Retweets
1 Like
0 Bookmarks
0 Replies
0 Quotes
CVE-2025-31115: XZ Utils Hit Again with High-Severity Multithreaded Decoder Bug https://t.co/FfqrbC2TNq
@Dinosn
7 Apr 2025
3967 Impressions
15 Retweets
52 Likes
14 Bookmarks
1 Reply
0 Quotes
В XZ Utils обнаружена уязвимость use-after-free (CVE-2025-31115, 8.7 балла CVSS) в декодировщике многопоточного режима liblzma, затрагивающая версии с 5.3.3alpha по 5.8.0. Подробнее https://t.co/bxRVZSJ9dU https://t.co/Hu5yEeCcSd
@KZCERT
7 Apr 2025
33 Impressions
0 Retweets
0 Likes
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0 Replies
0 Quotes
XZ Utilsにメモリ破壊の脆弱性。CVE-2025-31115はCVSSv4スコア8.7で、バージョン5.3.3alphaから5.8.0に影響。liblzmaのlzma_stream_decoder_mt関数が不正な入力をデコードする際に予測外の挙動。最低でもクラッシュ、最悪では任意コード実行の可能性。 https://t.co/ZyQ9i9f59q
@__kokumoto
7 Apr 2025
5650 Impressions
10 Retweets
8 Likes
3 Bookmarks
0 Replies
1 Quote
CVE-2025-31115: XZ Utils Hit Again with High-Severity Multithreaded Decoder Bug https://t.co/2VOziBqH4g
@Daily_CyberSec
7 Apr 2025
2834 Impressions
29 Retweets
64 Likes
17 Bookmarks
0 Replies
1 Quote
🚨 CVE-2025-31115 🔴 HIGH (8.7) 🏢 tukaani-project - xz 🏗️ >= 5.3.3alpha, < 5.8.1 🔗 https://t.co/NeFth3KWYw 🔗 https://t.co/XUPCoQ59j1 🔗 https://t.co/W44EvfHH0C #CyberCron #VulnAlert #InfoSec https://t.co/al2ETB3L1n
@cybercronai
4 Apr 2025
7 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
CVE-2025-31115: XZ Utils: Threaded decoder frees memory too early https://t.co/imwJoiEvmv At least a crash (denial of service). Heap use after free and writing to an address based on the null pointer plus an offset. Affects versions from 5.3.3alpha to 5.8.0. Fixed in 5.8.1.
@oss_security
3 Apr 2025
3 Impressions
0 Retweets
0 Likes
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0 Replies
0 Quotes
CVE-2025-31115 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 b… https://t.co/Wy62b6xSv7
@CVEnew
3 Apr 2025
103 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
[CVE-2025-31115: HIGH] XZ Utils versions 5.3.3alpha to 5.8.0 had a bug in the multithreaded .xz decoder, leading to crashes due to invalid input. The issue is resolved in version 5.8.1 with a patch available for ...#cybersecurity,#vulnerability https://t.co/oIRRchSFAk https://t.c
@CveFindCom
3 Apr 2025
29 Impressions
0 Retweets
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CVE-2025-31115 fixes for new xz vulnerability applied to stable/3.2 and master branches. will be part of the next release, 3.2.3. https://t.co/IEsj14Pw8S
@midnightbsd
3 Apr 2025
47 Impressions
0 Retweets
3 Likes
0 Bookmarks
0 Replies
0 Quotes