Loading vulnerability…
CVE-2021-26341 is a transient-execution vulnerability affecting AMD Zen1 and Zen2 processors. Under conditions associated with absent or evicted Branch Target Buffer entries, direct unconditional JMP and CALL instructions can be mispredicted, causing transient execution of fall-through instructions that architecturally should be unreachable. This constitutes a variant of Straight-Line Speculation. Although the speculative window is short, speculative loads can create cache-observable effects and may disclose data. Store-to-Load Forwarding can supply data to dependent instructions within the transient window, enabling practical cache side-channel gadgets, including gadgets capable of disclosing kernel-address information.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A speculative-execution vulnerability affecting AMD Zen1/Zen2 where the branch predictor can mispredict direct unconditional control-flow transfers (e.g., JMP/CALL), enabling straight-line speculative execution of fall-through “dead” code past the branch. This can be induced reliably (e.g., by evicting/flush-ing BTB entries) and used to create short SLS gadgets that leak information via microarchitectural side channels (cache), including demonstrations breaking Linux KASLR via eBPF-injected gadgets.
Transient-execution vulnerability affecting AMD CPUs.
CPU transient-execution issue affecting AMD processors.
AMD CPU speculative-execution issue that can execute transiently beyond an unconditional direct branch.
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.