Bug 2395789 (CVE-2025-39815) - CVE-2025-39815 kernel: RISC-V: KVM: fix stack overrun when loading vlenb
Summary: CVE-2025-39815 kernel: RISC-V: KVM: fix stack overrun when loading vlenb
Keywords:
Status: NEW
Alias: CVE-2025-39815
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-16 14:02 UTC by OSIDB Bzimport
Modified: 2025-09-16 16:03 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-09-16 14:02:36 UTC
In the Linux kernel, the following vulnerability has been resolved:

RISC-V: KVM: fix stack overrun when loading vlenb

The userspace load can put up to 2048 bits into an xlen bit stack
buffer.  We want only xlen bits, so check the size beforehand.


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