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CVE-2023-53684

xfrm: Zero padding when dumping algos and encap

MEDIUM
5.5
CVSS Score
Published: October 7, 2025 at 03:21 PM UTC
Updated: October 28, 2026 at 08:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.11 ≤ v < 5.15.1065.16 ≤ v < 6.1.236.2 ≤ v < 6.2.105.116.36.3 rc16.3 rc2c7a5899eb26e2a4d516d53f65b6dd67be2228041
Vendor states this is fixed in 0725daaa9a879388ed312110f62dbd5ea2d75f8f (fixed)
Vendor states this is fixed in 1a351e26cc010d6991fbbd5701ac16581372e26f (fixed)
Vendor states this is fixed in 5218af4ad5d8948faac19f71583bcd786c3852df (fixed)
Vendor states this is fixed in 8222d5910dae08213b6d9d4bc9a7f8502855e624 (fixed)
Vendor states this is fixed in 5.11 (unaffected)
Vendor states this is fixed in 5.15.106 (unaffected)
Vendor states this is fixed in 6.1.23 (unaffected)
Vendor states this is fixed in 6.2.10 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

References (4)

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

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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