PT-2018-6730 · Linux+1 · Linux Kernel+1

Ju Hyung Park · Published 2017-09-14 · Updated 2018-07-09 · CVE-2017-18200

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.14

Description: The issue is related to the f2fs implementation in the Linux kernel, which mishandles reference counts associated with f2fs wait discard bios calls. This allows local users to cause a denial of service, as demonstrated by fstrim.

Recommendations: For Linux kernel versions prior to 4.14, update to version 4.14 or later to resolve the issue.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALT-PU-2017-2206

ALT-PU-2018-1991

CVE-2017-18200

Affected Products

Alt Linux

Linux Kernel

References · 7

• https://github.com/torvalds/linux/commit/638164a2718f337ea224b747cf5977ef143166a4 · Patch
• https://ubuntu.com/security/CVE-2017-18200 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-18200 · Security Note
• https://osv.dev/vulnerability/CVE-2017-18200 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18200 · Security Note
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=638164a2718f337ea224b747cf5977ef143166a4 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-18200 · Vendor Advisory