Bug 2461560 (CVE-2026-31553) - CVE-2026-31553 kernel: KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()
Summary: CVE-2026-31553 kernel: KVM: arm64: Fix the descriptor address in __kvm_at_swa...
Keywords:
Status: NEW
Alias: CVE-2026-31553
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-24 15:08 UTC by OSIDB Bzimport
Modified: 2026-04-24 17:18 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-24 15:08:30 UTC
In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()

Using "(u64 __user *)hva + offset" to get the virtual addresses of S1/S2
descriptors looks really wrong, if offset is not zero. What we want to get
for swapping is hva + offset, not hva + offset*8. ;-)

Fix it.


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