In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`, `_paddingSize`, and `_dataOffset` fields during `DataDescriptor` message deserialization. An unauthenticated remote attacker can send a crafted network payload that triggers an unsigned integer underflow in `DataDescriptor::getPayloadSize()` and `DataDescriptor::getNextDescriptor()`. This results in an out-of-bounds heap read and an immediate process crash (SIGSEGV), causing a denial of service.
Metrics
Affected Vendors & Products
References
History
Mon, 26 Oct 2026 18:30:00 +0000
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ssvc
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Wed, 21 Oct 2026 20:45:00 +0000
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Eclipse
Eclipse eclipse Openj9 |
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| Vendors & Products |
Eclipse
Eclipse eclipse Openj9 |
Wed, 21 Oct 2026 08:15:00 +0000
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| Description | In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`, `_paddingSize`, and `_dataOffset` fields during `DataDescriptor` message deserialization. An unauthenticated remote attacker can send a crafted network payload that triggers an unsigned integer underflow in `DataDescriptor::getPayloadSize()` and `DataDescriptor::getNextDescriptor()`. This results in an out-of-bounds heap read and an immediate process crash (SIGSEGV), causing a denial of service. | |
| Title | JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization | |
| Weaknesses | CWE-125 CWE-191 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: eclipse
Published: 2026-10-21T08:00:32.804Z
Updated: 2026-10-26T17:57:34.946Z
Reserved: 2026-10-15T13:55:41.439Z
Link: CVE-2026-111075
Updated: 2026-10-26T17:50:39.662Z
Status : Awaiting Analysis
Published: 2026-10-21T08:16:42.960
Modified: 2026-10-26T18:17:35.790
Link: CVE-2026-111075
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