Disclosure summary
LZ4 through 1.10.0 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact when the application processes untrusted LZ4 frames. For example, LZ4F_createCDict_advanced in lib/lz4frame.c mishandles NULL checks.
Source-reported weakness categories
CWE-158
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2025-Oct
Open original source · Updated Aug 06, 2026
LZ4 through 1.10.0 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact when the application processes untrusted LZ4 frames. For example, LZ4F_createCDict_advanced in lib/lz4frame.c mishandles NULL checks.
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 5.9
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 lz4 1.9.4-1 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 mysql 8.0.44-2 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 lz4 1.9.4-2 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 mysql 8.0.44-2 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 rust 1.75.0-22 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 lz4 1.9.4-1 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 mysql 8.0.43-1 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 mysql 8.0.43-1 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 lz4 1.9.4-2 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 rust 1.90.0-1 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 1.9.4-2 · product IDs 20592-17086, 20619-17084, 20586-17084, 20609-17086
- Vendor guidance · product IDs 20592-17086, 20619-17084, 20586-17084, 20609-17086
- CBL-Mariner Releases · build 8.0.44-2 · product IDs 20610-17086, 20620-17084, 20440-17084, 19570-17086
- Vendor guidance · product IDs 20610-17086, 20620-17084, 20440-17084, 19570-17086
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-10-23T21:02:42-04:00
MODIFIED 2026-08-06T20:29:00-04:00
INGESTED 2026-10-08T12:45:38-04:00