CVE-2023-53684 – xfrm: Zero padding when dumping algos and encap

CVE ID : CVE-2023-53684

Published : Oct. 7, 2025, 4:15 p.m. | 19 minutes ago

Description : 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.

Severity: 0.0 | NA

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