CVE-2018-10323 : Security Advisory and Response

A vulnerability exists in the Linux kernel through version 4.16.3 that allows local users to disrupt system functionality by exploiting a NULL pointer dereference in the xfs_bmapi_write function.

Understanding CVE-2018-10323

This CVE entry highlights a vulnerability in the Linux kernel that can be exploited by local users to cause system disruption.

What is CVE-2018-10323?

The vulnerability in the Linux kernel through version 4.16.3 allows local users to exploit a NULL pointer dereference in the xfs_bmapi_write function, triggered by a carefully crafted xfs image.

The Impact of CVE-2018-10323

The vulnerability enables local users to disrupt system functionality, potentially leading to a denial of service.

Technical Details of CVE-2018-10323

This section provides technical details of the CVE-2018-10323 vulnerability.

Vulnerability Description

The xfs_bmap_extents_to_btree function in fs/xfs/libxfs/xfs_bmap.c in the Linux kernel through 4.16.3 allows local users to cause a denial of service via a crafted xfs image.

Affected Systems and Versions

Affected Version: Linux kernel through 4.16.3
Systems: Linux systems running the affected kernel version

Exploitation Mechanism

Local users can exploit a NULL pointer dereference in the xfs_bmapi_write function
Triggered by a carefully crafted xfs image

Mitigation and Prevention

Protecting systems from CVE-2018-10323 requires immediate steps and long-term security practices.

Immediate Steps to Take

Apply relevant patches and updates from the Linux distribution provider
Monitor vendor advisories for security patches

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version
Implement least privilege access controls to limit user capabilities

Patching and Updates

Regularly check for and apply security updates provided by the Linux distribution