CVE Database


Impact: Important
Public: 2012-10-23
Bugzilla: 869904: CVE-2012-4508 kernel: ext4: AIO vs fallocate stale data exposure


The MITRE CVE dictionary describes this issue as:

Race condition in fs/ext4/extents.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.

Find out more about CVE-2012-4508 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 4.9
Base Metrics: AV:L/AC:L/Au:N/C:C/I:N/A:N
Access Vector: Local
Access Complexity: Low
Authentication: None
Confidentiality Impact: Complete
Integrity Impact: None
Availability Impact: None

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

Red Hat security errata

Platform Errata Release Date
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:1491 December 04, 2012
Red Hat Enterprise Linux Server EUS (v. 6.2) (kernel) RHSA-2013:1519 November 13, 2013
Red Hat Enterprise Linux Server EUS (v. 6.3) (kernel) RHSA-2013:1783 December 05, 2013
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:1540 December 04, 2012
Red Hat Enterprise Linux version 6 (kernel) RHSA-2013:0496 February 20, 2013

External References


Red Hat would like to thank Theodore Ts'o for reporting this issue. Upstream acknowledges Dmitry Monakhov as the original reporter.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.