BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-02-03

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: vdpa: Add features attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being described produces a valid nlattr pointer in info->attrs before entering into each handler in vdpa_nl_ops. That is to say, the missing part in vdpa_nl_policy may lead to illegal nlattr after parsing, which could lead to OOB read just like CVE-2023-3773. This patch adds the missing nla_policy for vdpa features attr to avoid such bugs.

CVSS Scores

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Meta Information

Published

2025-10-07

Last Modified

2026-02-03

Generated

2026-07-06

AI Q&A

2025-10-07

EPSS Evaluated

2026-07-05

NVD

CVE-2023-53652

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	6.5
linux	linux_kernel	From 6.2 (inc) to 6.4.12 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is related to the Linux kernel's vdpa component. The vdpa_nl_policy structure, which validates netlink attributes (nlattr) when parsing incoming netlink messages, was missing a policy for the 'features' attribute. This omission could lead to an invalid nlattr pointer after parsing, potentially causing an out-of-bounds (OOB) read similar to CVE-2023-3773. The vulnerability was fixed by adding the missing nla_policy for the vdpa features attribute to ensure proper validation and prevent such bugs.

Impact Analysis

This vulnerability could allow an attacker to cause an out-of-bounds read in the Linux kernel's vdpa component by exploiting the missing validation of the 'features' attribute in netlink messages. Such an OOB read may lead to information disclosure, system instability, or crashes, potentially compromising system security and reliability.

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