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611385: CVE-2010-2492 kernel: ecryptfs_uid_hash() buffer overflow

The MITRE CVE dictionary describes this issue as:

Buffer overflow in the ecryptfs_uid_hash macro in fs/ecryptfs/messaging.c in the eCryptfs subsystem in the Linux kernel before 2.6.35 might allow local users to gain privileges or cause a denial of service (system crash) via unspecified vectors.

Find out more about CVE-2010-2492 from the MITRE CVE dictionary dictionary and NIST NVD.


The Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and Red Hat
Enterprise MRG did not include support for eCryptfs, and therefore are not
affected by this issue. A future update in Red Hat Enterprise Linux 6 may
address this flaw. This was addressed in Red Hat Enterprise Linux 5 via

CVSS v2 metrics

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

Base Score 7.2
Base Metrics AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
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 6 (kernel) RHSA-2011:0007 2011-01-11
Red Hat Enterprise Linux 5 (kernel) RHSA-2010:0723 2010-09-29


Red Hat would like to thank Andre Osterhues for reporting this issue.

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