abdul-kalam2000/retbleed-speculative-execution-poc

PoC

Reproduction of the Retbleed (CVE-2022-29900/29901) micro-architectural attack in gem5. RSB underflow, Flush+Reload side-channel leak, and a verified lfence mitigation.

view exploit source poc_in_githubauthor abdul-kalam2000published 2026-09-11catalog poc_in_github

exploited CVEs (1)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2022-29900US	medium6.5	3.94% (90th)	Exploit	2022-07-12
Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.

scry

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