Bug 2367566 (CVE-2025-37948) - CVE-2025-37948 kernel: arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs
Summary: CVE-2025-37948 kernel: arm64: bpf: Add BHB mitigation to the epilogue for cBP...
Keywords:
Status: NEW
Alias: CVE-2025-37948
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: 2025-05-20 17:01 UTC by OSIDB Bzimport
Modified: 2026-06-29 20:35 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2025-05-20 17:01:13 UTC
In the Linux kernel, the following vulnerability has been resolved:

arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs

A malicious BPF program may manipulate the branch history to influence
what the hardware speculates will happen next.

On exit from a BPF program, emit the BHB mititgation sequence.

This is only applied for 'classic' cBPF programs that are loaded by
seccomp.

Comment 1 Jon Moroney 2025-05-21 00:44:02 UTC Comment hidden (spam)

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