PT-2018-3517 · Linux+2 · Linux Kernel+2

Wen Xu · Published 2018-07-26 · Updated 2019-09-02 · CVE-2018-14614

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Linux kernel versions through 4.17.10

Description: The issue is related to the remove dirty segment() function in the Linux kernel, which is associated with a null pointer dereference. Exploitation of this issue may allow an attacker to cause a denial of service. There is an out-of-bounds access in the remove dirty segment() function in fs/f2fs/segment.c when mounting an f2fs image.

Recommendations: For Linux kernel versions through 4.17.10, consider updating to a newer version to resolve the issue. As a temporary workaround, restrict access to the remove dirty segment() function in fs/f2fs/segment.c to minimize the risk of exploitation. Avoid mounting untrusted f2fs images until the issue is resolved.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2018-2092

ALT-PU-2018-2094

ALT-PU-2019-1433

BDU:2020-03258

CVE-2018-14614

DLA-1715-1

USN-3932-1

USN-3932-2

USN-4094-1

USN-4118-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 109

• https://cve.org/CVERecord?id=CVE-2018-14614 · Security Note
• https://osv.dev/vulnerability/USN-4094-1 · Vendor Advisory
• https://usn.ubuntu.com/4094-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13093 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-14614 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-7222 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20511 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-13631 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15220 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3932-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03258 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-146114 · Vendor Advisory
• https://usn.ubuntu.com/4118-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15214 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9506 · Vendor Advisory