Public Date:
1193907: CVE-2015-0275 kernel: fs: ext4: fallocate zero range page size > block size BUG()
A flaw was found in the way the Linux kernel's ext4 file system handled the "page size > block size" condition when the fallocate zero range functionality was used. A local attacker could use this flaw to crash the system.

Find out more about CVE-2015-0275 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6. This issue does affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future updates in the respective releases may address this issue.

CVSS v2 metrics

Base Score 4.7
Base Metrics AV:L/AC:M/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (kernel) RHSA-2015:1778 2015-09-15
Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2015:1787 2015-09-15
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2015:1788 2015-09-15

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.


This issue was discovered by Xiong Zhou of Red Hat.
Last Modified