CVE-2023-53684: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.11 — 5.15.106
linux	linux_kernel	5.16 — 6.1.23
linux	linux_kernel	6.2 — 6.2.10
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53684? +

CVE-2023-53684 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-53684? +

CVE-2023-53684 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53684? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-53684