CVE-2023-53684

MediumCVSS 5.5/10Last modified Nov 5, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

Vendor	Product	Versions
Linux	Linux	>= c7a5899eb26e2a4d516d53f65b6dd67be2228041, < 0725daaa9a879388ed312110f62dbd5ea2d75f8f; >= c7a5899eb26e2a4d516d53f65b6dd67be2228041, < 5218af4ad5d8948faac19f71583bcd786c3852df; >= c7a5899eb26e2a4d516d53f65b6dd67be2228041, < 1a351e26cc010d6991fbbd5701ac16581372e26f; >= c7a5899eb26e2a4d516d53f65b6dd67be2228041, < 8222d5910dae08213b6d9d4bc9a7f8502855e624
Linux	Linux	5.11

References

Timeline

Published: Oct 7, 2025
Last modified: Nov 5, 2026
NVD status: Analyzed

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