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CVE-2018-5803 is an improper input-validation flaw in the Linux kernel SCTP implementation. The _sctp_make_chunk() function in net/sctp/sm_make_chunk.c fails to validate SCTP payload length correctly while processing SCTP packets. Crafted packet-length input can trigger a kernel crash, resulting in denial of service. Upstream Linux kernels before 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102 are affected.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel SCTP denial-of-service vulnerability caused by a missing payload length check.
Linux kernel SCTP payload-length validation flaw enabling denial of service.
A Linux kernel SCTP payload-length-validation flaw that permits denial of service.
A missing payload-length check in the Linux kernel SCTP _sctp_make_chunk() function that permits denial of service.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.