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CVE-2024-21823 is a hardware logic vulnerability involving insecure de-synchronization in Intel Data Streaming Accelerator (DSA) and Intel In-Memory Analytics Accelerator (IAA) components on some 4th- and 5th-generation Intel Xeon processors. The issue is exposed through the Linux kernel dmaengine/idxd driver when an untrusted application has direct access to the affected accelerator hardware. An authorized local user may potentially exploit the erratum to escalate privileges.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel Intel Data Streaming Accelerator (idxd) hardware-erratum issue involving direct access by an untrusted application.
Linux kernel Intel DSA/idxd hardware-erratum issue involving potential direct access by an untrusted application.
Linux kernel Intel DSA/idxd hardware-erratum issue involving direct access by an untrusted application.
Linux kernel Intel Data Streaming Accelerator hardware-erratum issue involving untrusted direct access.
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.