ITScape
CVE-2026-46316, dubbed ITScape, is a guest-to-host escape vulnerability in the Linux kernel's KVM/arm64 vGIC-ITS emulation. The bug is in vgic_its_invalidate_cache(), which walks the per-ITS translation cache with xa_for_each() and drops references with vgic_put_irq(). Due to incorrect handling during concurrent cache invalidation, the code can drop the iterated pointer rather than only the entry actually removed by xa_erase(). Because xa_erase() is atomic and multiple invalidation paths can run concurrently under different locking contexts, the same cache-held reference can be dropped more than once. This creates a double-put condition that can free an IRQ translation entry while it is still mapped by an ITE, resulting in a use-after-free in in-kernel KVM on arm64. Public reporting and PoC material indicate this can be driven from the guest side and can be exploited for guest escape to host kernel code execution.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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.