CVE-2017-18224 Information

Description

In the Linux kernel before 4.15 fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.

CVSS Vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f http://www.securityfocus.com/bid/103353 https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f https://www.debian.org/security/2018/dsa-4188

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.7