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CVE-2022-29900, also known as Retbleed and tracked alongside CVE-2022-23816, is a hardware speculative-execution vulnerability in affected AMD processors. An attacker can mistrain branch prediction for return instructions, causing speculative control-flow redirection and arbitrary speculative code execution under microarchitecture-dependent conditions. Speculatively accessed kernel data may then be recovered through microarchitectural side channels. Affected processors include AMD families 0x15 through 0x17, spanning Bulldozer through Zen 2, and Hygon family 0x18.
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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.
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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
AMD RetBleed speculative-execution vulnerability involving return instructions.
AMD RetBleed speculative-execution vulnerability involving return instructions.
An AMD CPU RetBleed speculative-execution vulnerability involving return instructions that can result in arbitrary speculative code execution.
AMD RetBleed speculative-execution vulnerability involving return instructions and arbitrary speculative code execution.
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.