EUVD-2026-13426Published

lz4_flex is a pure Rust implementation of LZ4 compression/decompression. In versions 0.11.5 and below, and 0.12.0, decompressing invalid LZ4 data can leak sensitive information from uninitialized memory or from previous decompression opera…

Historical advisory saved 15 Nov 2026 12:02:12 UTC. The publisher may have updated it since then. Latest advisory.

euvd · EUVD-2026-13426

Published

lz4_flex is a pure Rust implementation of LZ4 compression/decompression. In versions 0.11.5 and below, and 0.12.0, decompressing invalid LZ4 data can leak sensitive information from uninitialized memory or from previous decompression operations. The library fails to properly validate offset values during LZ4 "match copy operations," allowing out-of-bounds reads from the output buffer. The block-based API functions (`decompress_into`, `decompress_into_with_dict`, and others when `safe-decode` is disabled) are affected, while all frame APIs are unaffected. The impact is potential exposure of sensitive data and secrets through crafted or malformed LZ4 input. This issue has been fixed in versions 0.11.6 and 0.12.1.

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Mar 20, 2026, 12:49:12 AM

dateUpdated: Sep 17, 2026, 12:04:33 PM

5 related source bulletins · separate from aliases

RHSA-2026:11800: Red Hat Security Advisory: Logging for Red Hat OpenShift - 6.2.10

CVE-2026-25679 · CVE-2026-27137 · CVE-2026-32829

RHSA-2026:22862: Red Hat Security Advisory: Logging for Red Hat OpenShift - 6.4.5

CVE-2026-25679 · CVE-2026-27137 · CVE-2026-31812 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32282 · CVE-2026-32829 · CVE-2026-33810

RHSA-2026:16354: Red Hat Security Advisory: Logging for Red Hat OpenShift - 6.5.1

CVE-2026-32829

WID-SEC-W-2026-1504: Logging Subsystem for Red Hat OpenShift: Schwachstelle ermöglicht Offenlegung von Informationen

CVE-2026-32829

RHSA-2026:19712: Red Hat Security Advisory: RHOAI 3.3.3 - Red Hat OpenShift AI

CVE-2025-6242 · CVE-2025-12816 · CVE-2025-13465 · CVE-2025-15284 · CVE-2025-59057 · CVE-2025-61726 · CVE-2025-61729 · CVE-2025-62164 · CVE-2025-62718 · CVE-2025-64756 · CVE-2025-66031 · CVE-2025-66418 · CVE-2025-66448 · CVE-2025-66471 · CVE-2025-69223 · CVE-2025-69873 · CVE-2026-0846 · CVE-2026-0847 · CVE-2026-4800 · CVE-2026-21441 · CVE-2026-21884 · CVE-2026-22029 · CVE-2026-22778 · CVE-2026-23490 · CVE-2026-23745 · CVE-2026-24049 · CVE-2026-24486 · CVE-2026-24779 · CVE-2026-25639 · CVE-2026-25990 · CVE-2026-27893 · CVE-2026-28684 · CVE-2026-29063 · CVE-2026-29074 · CVE-2026-30922 · CVE-2026-31812 · CVE-2026-32597 · CVE-2026-32829 · CVE-2026-32981 · CVE-2026-33186 · CVE-2026-33231 · CVE-2026-33236 · CVE-2026-34986 · CVE-2026-40175 · CVE-2026-40192 · CVE-2026-40895

Source published: Mar 20, 2026, 12:49:12 AM (timezone not stated)
Source modified: Sep 17, 2026, 12:04:33 PM (timezone not stated)
Saved here: 15 Nov 2026 12:02:12 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 4.0 · 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N