Public Date:
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 dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

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
Red Hat Enterprise Linux Server EUS (v. 6.2) (kernel) RHSA-2013:1519 2013-11-13
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:1491 2012-12-04
Red Hat Enterprise Linux Server EUS (v. 6.3) (kernel) RHSA-2013:1783 2013-12-05
Red Hat Enterprise Linux version 6 (kernel) RHSA-2013:0496 2013-02-20
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:1540 2012-12-04


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