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Fencer Vulns
medium 5.3

CVE-2024-3933 json

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

published 2024-05-27 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-32500

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

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.

Patch / fix

  • Eclipse Foundation Open J9 0.44.0
  • java-1_8_0-ibm SLES for SAP 15 SP4, SLES for SAP 15 SP3, SLES for SAP 15 SP2 +11 more 1.8.0_sr8.35-150000.3.95.1
  • java-1_8_0-ibm SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.8.0_sr8.35-30.129.1

suse advisories SUSE-SU-2024:4306-1SUSE-SU-2024:4252-1

  • java-11-openj9 Package Hub 15 SP6, openSUSE Leap 15.6 11.0.26.0-bp156.4.3.1
  • java-11-openj9 openSUSE Tumbleweed 11.0.26.0-1.1
  • java-1_8_0-openj9 openSUSE Tumbleweed 1.8.0.442-1.1

opensuse advisories openSUSE-SU-2025:0066-1openSUSE-SU-2025:14747-1openSUSE-SU-2025:14749-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
NVD 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected products

  • Eclipse Foundation Open J9

Classification

Weakness
  • CWE-805 Buffer Access with Incorrect Length Value
  • CWE-125 Out-of-bounds Read
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.