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CVE-2024-26766 is an off-by-one error in the Linux kernel IB/hfi1 SDMA transmit-descriptor handling. A prior change failed to correctly determine when the transmit descriptor array must be expanded for padding. An SDMA transmission containing exactly six descriptors and requiring dword padding writes a seventh descriptor beyond the allocated array and corrupts adjacent fields in the containing transmit-request structure. Corruption is subsequently dereferenced during send completion, causing a kernel fault or panic.
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No public exploit code observed for this vulnerability.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel vulnerability in the IB/hfi1 component caused by an off-by-one error involving sdma.h tx->num_descs.
An off-by-one error in the Linux kernel IB/hfi1 component involving sdma.h tx->num_descs.
An off-by-one error in the Linux kernel IB/hfi1 component involving sdma.h tx->num_descs.
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.