PT-2018-3518 · Linux+3 · Linux Kernel+3

Markus Loewe · Published 2018-07-26 · Updated 2021-06-14 · CVE-2018-14613

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 prior to 4.17.10

Description: The issue is related to an invalid pointer dereference in the io ctl map page() function when mounting and operating a crafted btrfs image. This is due to a lack of block group item validation in check leaf item in fs/btrfs/tree-checker.c. Exploitation of this issue may allow an attacker to cause a denial of service.

Recommendations: For Linux kernel versions prior to 4.17.10, update to a version 4.17.10 or later to resolve the issue. As a temporary workaround, consider restricting the use of crafted btrfs images to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2018-2092

ALT-PU-2018-2094

ALT-PU-2019-1433

BDU:2020-03259

CVE-2018-14613

DLA-1715-1

DLA-2241-1

DLA-2241-2

OPENSUSE-SU-2018_3071-1

OPENSUSE-SU-2018_3202-1

SUSE-SU-2018:2980-1

SUSE-SU-2018:2981-1

SUSE-SU-2018:3003-1

SUSE-SU-2018:3004-1

SUSE-SU-2018:3659-1

SUSE-SU-2018:3961-1

SUSE-SU-2019:0095-1

USN-3932-1

USN-3932-2

USN-4094-1

USN-4118-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 568

• 🔥 https://bugzilla.kernel.org/show_bug.cgi?id=199849 · Exploit
• https://usn.ubuntu.com/4094-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13098 · Vendor Advisory
• https://usn.ubuntu.com/3932-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-14617 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13100 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-6974 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15216 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11884 · Vendor Advisory
• https://usn.ubuntu.com/3932-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14613 · Security Note
• https://ubuntu.com/security/CVE-2019-13272 · 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-2019-15220 · Vendor Advisory