CVE-2012-2745

Impact:
Moderate
Public Date:
2012-07-10
Bugzilla:
833428: CVE-2012-2745 kernel: cred: copy_process() should clear child->replacement_session_keyring

The MITRE CVE dictionary describes this issue as:

The copy_creds function in kernel/cred.c in the Linux kernel before 3.3.2 provides an invalid replacement session keyring to a child process, which allows local users to cause a denial of service (panic) via a crafted application that uses the fork system call.

Find out more about CVE-2012-2745 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the versions of the Linux kernel as shipped with Red
Hat Enterprise Linux 5 as they did not include support for
KEYCTL_SESSION_TO_PARENT keyctl IOCTL as introduced in upstream commit ee18d64c.
This issue did not affect the versions of the Linux kernel as shipped with Red
Hat Enterprise Linux MRG 2 as they already contain the fix.

This issue was addressed in Red Hat Enterprise Linux 6 via RHSA-2012:1064 https://rhn.redhat.com/errata/RHSA-2012-1064.html.

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 6 (kernel) RHSA-2012:1064 2012-07-10

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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