CVE-2026-89046

A flaw was found in zstd-jni. This out-of-bounds read vulnerability in the Zstd.getFrameContentSize function occurs because it fails to validate negative srcPosition arguments. A remote attacker can supply negative offset values, bypassing bounds checks and accessing the native frame-header parser. This can lead to out-of-bounds memory reads, resulting in information disclosure or a Java Virtual Machine (JVM) crash.

Red Hat is aware of an out-of-bounds read in zstd-jni when a negative source position is supplied to Zstd.getFrameContentSize. This may disclose native memory or cause a JVM crash. Affected Red Hat products are tracked for updates containing zstd-jni 1.5.7-14 or later.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Update to a product release containing zstd-jni 1.5.7-14 or later. Until updated, validate source positions and reject negative offsets before calling Zstd.getFrameContentSize. Do not pass attacker-controlled offsets to this method without validation.