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CVE-2023-20569, also known as Inception or Speculative Return Stack Overflow (SRSO), is a speculative execution side-channel vulnerability affecting certain AMD processors, broadly described as Zen 1 through Zen 4. The flaw allows an attacker to influence return address prediction so that a return instruction speculatively executes at an attacker-controlled address. By poisoning return prediction structures, the attacker can induce transient execution along a mispredicted path and then recover data through side-channel observation. The issue is rooted in CPU return address prediction behavior rather than a conventional memory safety bug, and can expose data across privilege boundaries, including kernel memory under suitable conditions.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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 2023 AMD speculative execution vulnerability used in the research chain to fill the return stack buffer with an attacker-chosen target; it is referenced as a prerequisite component of the demonstrated attack path.
A vulnerability affecting Zen 3 and Zen 4 AMD CPUs that may allow an attacker to influence return address prediction and potentially cause information disclosure.
A speculative execution side-channel vulnerability in certain AMD processors, also known as Inception, that can cause speculative execution at an attacker-controlled address and may lead to information disclosure.
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.