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CVE-2022-26373 is a speculative-execution information-disclosure vulnerability in certain Intel processors supporting Enhanced Indirect Branch Restricted Speculation (eIBRS). Following a Return Stack Buffer (RSB) barrier, including after a VM exit or an Indirect Branch Prediction Barrier event, an unbalanced near RET can be speculatively predicted to the linear address following the most recent near CALL executed before the barrier. This cross-context RSB target can be used until the first post-barrier CALL retires, undermining intended predictor isolation between contexts.
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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 public exploits tracked yet. Mallory keeps watching.
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.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Intel CPU speculative-execution issue involving return stack buffer predictions after barriers.
Intel CPU speculative-execution vulnerability involving return-stack-buffer predictions after barriers.
Intel CPU post-barrier Return Stack Buffer prediction issue.
CPU speculative-execution issue involving post-barrier Return Stack Buffer predictions on Intel systems.
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.