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DiagSpill is an integer-overflow vulnerability in the Linux kernel SCTP diagnostic path. SCTP association peer transports are counted in a 16-bit transport_count field. In sctp_assoc_add_peer(), adding the 65,536th unique peer causes this counter to wrap. SCTP sock_diag uses the wrapped count to reserve space for peer-address data, but subsequently iterates over and copies every transport in the association's peer-address list. The resulting size mismatch causes peer address data to be written beyond the allocated skb payload. The upstream fix rejects addition of a new unique peer once transport_count reaches U16_MAX, while preserving lookup and return of an existing transport for duplicate addresses.
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No public exploit code observed for this vulnerability.
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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux local privilege-escalation (local root) vulnerability referred to as DiagSpill.
A vulnerability addressed by the Oracle Linux ELSA-2026-500330 update for affected Oracle Linux kernel-uek packages. The content supplies a CVSS v3 vector of AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Linux kernel vulnerability addressed by Debian 13 security advisory DSA-6466.
An important Linux kernel SCTP vulnerability involving an overflow of the peer transport count. Amazon Linux assigns CVSS v3.1 score 7.1 with local attack vector, low attack complexity, low privileges required, no user interaction, and high integrity and availability impact.
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.