CVE-2024-3933

Eclipse Open J9 With -Xgc:concurrentScavenge on IBM Z, could write/read outside of a buffer

HIGH
7.3
CVSS Score
Published: May 27, 2024 at 06:08 AM UTC
Updated: June 17, 2026 at 07:45 AM UTC
2 products affected across 1 vendorOpenJ9Omr

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In Eclipse OpenJ9 release versions prior to 0.44.0 and after 0.13.0, when running with JVM option -Xgc:concurrentScavenge, the sequence generated for System.arrayCopy on the IBM Z platform with hardware and software support for guarded storage [1], could allow access to a buffer with an incorrect length value when executing an arraycopy sequence while the Concurrent Scavenge Garbage Collection cycle is active and the source and destination memory regions for arraycopy overlap. This allows read and write to addresses beyond the end of the array range.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.13.0 ≤ v < 0.44.00.13.0
Affected range stops below 0.44.0, so it looks safe — our inference, not a vendor statement
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-787CWE-805

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