Bug 2402272 (CVE-2023-53684)

Summary: CVE-2023-53684 kernel: xfrm: Zero padding when dumping algos and encap
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-10-07 16:06:40 UTC 
In the Linux kernel, the following vulnerability has been resolved:

xfrm: Zero padding when dumping algos and encap

When copying data to user-space we should ensure that only valid
data is copied over.  Padding in structures may be filled with
random (possibly sensitve) data and should never be given directly
to user-space.

This patch fixes the copying of xfrm algorithms and the encap
template in xfrm_user so that padding is zeroed.
Comment 1 Jon Moroney 2025-10-07 20:28:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100709-CVE-2023-53684-db58@gregkh/T