CVE-2011-0726

Impact:
Low
Public Date:
2011-03-11
IAVA:
2012-A-0020
Bugzilla:
684569: CVE-2011-0726 kernel: proc: protect mm start_code/end_code in /proc/pid/stat

The MITRE CVE dictionary describes this issue as:

The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.

Find out more about CVE-2011-0726 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle,
https://access.redhat.com/support/policy/updates/errata/, therefore the fix for
this issue is not currently planned to be included in the future updates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.

CVSS v2 metrics

Base Score 2.1
Base Metrics AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
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 5 (kernel) RHSA-2011:0833 2011-05-31
Red Hat Enterprise Linux 6 (kernel) RHSA-2011:0498 2011-05-10
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2011:0500 2011-05-10

Acknowledgements

Red Hat would like to thank Kees Cook for reporting this issue.
Last Modified

CVE description copyright © 2017, The MITRE Corporation