Bug 2383452 (CVE-2025-38435) - CVE-2025-38435 kernel: riscv: vector: Fix context save/restore with xtheadvector
Summary: CVE-2025-38435 kernel: riscv: vector: Fix context save/restore with xtheadvector
Keywords:
Status: NEW
Alias: CVE-2025-38435
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-07-25 15:01 UTC by OSIDB Bzimport
Modified: 2025-11-25 18:04 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-07-25 15:01:33 UTC 
In the Linux kernel, the following vulnerability has been resolved:

riscv: vector: Fix context save/restore with xtheadvector

Previously only v0-v7 were correctly saved/restored,
and the context of v8-v31 are damanged.
Correctly save/restore v8-v31 to avoid breaking userspace.
Comment 1 Jon Moroney 2025-07-25 18:00:37 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072512-CVE-2025-38435-ffc0@gregkh/T
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