CVE-2017-15128 : Security Advisory and Response

An issue was discovered in the Linux kernel before version 4.13.12, specifically in the mm/hugetlb.c file, leading to a denial of service (BUG).

Understanding CVE-2017-15128

This CVE identifies a vulnerability in the Linux kernel that could result in a denial of service due to a flaw in the hugetlb_mcopy_atomic_pte function.

What is CVE-2017-15128?

The vulnerability in the Linux kernel before version 4.13.12 allows attackers to trigger a denial of service by exploiting a lack of size check in the hugetlb_mcopy_atomic_pte function.

The Impact of CVE-2017-15128

The vulnerability could potentially lead to a denial of service (BUG) on affected systems running the Linux kernel before version 4.13.12.

Technical Details of CVE-2017-15128

This section provides more technical insights into the CVE.

Vulnerability Description

The flaw in the hugetlb_mcopy_atomic_pte function in the mm/hugetlb.c file of the Linux kernel before version 4.13.12 allows for a denial of service attack.

Affected Systems and Versions

Product: Linux kernel before 4.13.12
Versions: Linux kernel before 4.13.12

Exploitation Mechanism

Attackers can exploit this vulnerability by not performing a size check in the hugetlb_mcopy_atomic_pte function, potentially leading to a denial of service.

Mitigation and Prevention

Protecting systems from CVE-2017-15128 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Linux kernel to version 4.13.12 or newer to mitigate the vulnerability.
Monitor for any unusual system behavior that could indicate a denial of service attack.

Long-Term Security Practices

Regularly update and patch the Linux kernel to address known vulnerabilities.
Implement network and system monitoring to detect and respond to potential security incidents.

Patching and Updates

Ensure timely patching and updates of the Linux kernel to stay protected against known vulnerabilities.