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CVE-2024-53241 is a speculative-execution vulnerability in the Linux kernel x86 Xen paravirtualized (PV) iret hypercall path, tracked as Xen Security Advisory XSA-466. The vulnerable implementation invokes the PV iret hypercall through the Xen hypercall page, a mechanism that is unsafe in the presence of speculation mitigations. The upstream correction replaces the jump through the hypercall page with the required iret sequence encoded directly in xen-asm.S, removing this use of the hypercall page.
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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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel Xen hypercall-page speculative-execution vulnerability.
Linux kernel Xen hypercall-page speculative-execution issue.
A Linux kernel Xen hypercall-page vulnerability unsafe against speculative attacks, addressed in the Red Hat Enterprise Linux 8 kernel-rt security update.
A Linux kernel Xen issue in which the Xen hypercall page is unsafe against speculative attacks. Red Hat addressed it in RHSA-2025:3893 for Red Hat Enterprise Linux 8 kernel packages.
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.