Kernel crash via truncated SCTP chunk header
Published Nov 19, 2024 · Updated Aug 5, 2026
Improper chunk-size validation in the Linux kernel allows remote attackers to crash the kernel with malformed SCTP packets. In sctp_sf_ootb, the packet walker treats one to three trailing bytes as another chunk header and reads up to two bytes beyond the packet buffer. Any host able to route SCTP traffic can reach the path without a listening socket or association; the out-of-bounds bytes are not returned to the attacker.
Summary
What happened
Improper chunk-size validation in the Linux kernel allows remote attackers to crash the kernel with malformed SCTP packets. In sctp_sf_ootb, the packet walker treats one to three trailing bytes as another chunk header and reads up to two bytes beyond the packet buffer. Any host able to route SCTP traffic can reach the path without a listening socket or association; the out-of-bounds bytes are not returned to the attacker.
The record
- CVE
- CVE-2024-50299
- Published
- Nov 19, 2024
- Updated
- Aug 5, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-908, CWE-131, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 19, 2024CVE publishedPublication date reported by the CVE source.
- Aug 5, 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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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