CVE-2023-53684

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.

CVSS 3.1

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

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-28)

Published

2025-10-07

Modified

2026-10-28

Record from

the NVD, synced 2026-10-28

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0725daaa9a879388ed312110f62dbd5ea2d75f8f
• https://git.kernel.org/stable/c/1a351e26cc010d6991fbbd5701ac16581372e26f
• https://git.kernel.org/stable/c/5218af4ad5d8948faac19f71583bcd786c3852df
• https://git.kernel.org/stable/c/8222d5910dae08213b6d9d4bc9a7f8502855e624

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