Service interruption via field-spanning VMCI datagram copy
Published May 19, 2024 · Updated May 12, 2026
Out-of-bounds write in the Linux kernel VMCI driver allows local users to interrupt service by submitting a crafted datagram. dg_dispatch_as_host copies the datagram header and attacker-controlled payload through the 24-byte msg field into an adjacent flexible array, triggering FORTIFY bounds enforcement. Access requires local low-privilege execution and a reachable VMCI host-dispatch path; the published impact is limited to availability.
Summary
What happened
Out-of-bounds write in the Linux kernel VMCI driver allows local users to interrupt service by submitting a crafted datagram. dg_dispatch_as_host copies the datagram header and attacker-controlled payload through the 24-byte msg field into an adjacent flexible array, triggering FORTIFY bounds enforcement. Access requires local low-privilege execution and a reachable VMCI host-dispatch path; the published impact is limited to availability.
The record
- CVE
- CVE-2024-35944
- Published
- May 19, 2024
- Updated
- May 12, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-787, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 19, 2024CVE publishedPublication date reported by the CVE source.
- May 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=V3.1.0 <V3.1.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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