CVE-2023-53516 - CVE House

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Status published Unknown CVE-2023-53516

macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF

0 CVSS

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff") added one additional attribute named IFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff. However, it forgot to describe the nla_policy at macvlan_policy (drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer can be faked as empty (0 bytes) by a malicious user, which could leads to OOB in heap just like CVE-2023-3773. To fix it, this commit just completes the nla_policy description for IFLA_MACVLAN_BC_CUTOFF. This enforces the length check and avoids the potential OOB read.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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fs/ntfs3: Initialize new folios before use

Affected Vendor

Linux

View all reports →

Affected Software

Linux

Vulnerable Versions:

954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348, 6.4, 0, 6.4.8, 6.5

Timeline

Official Publish: October 1st, 2025

Last Modified: May 11th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.