CVE-2015-4178

Impact:
Moderate
Public Date:
2015-07-01
CWE:
CWE-665
Bugzilla:
1249849: CVE-2015-4178 kernel: list corruption of m_list or s_list if unused
A flaw was found in the Linux kernel which is related to the user namespace lazily unmounting file systems. The fs_pin struct has two members (m_list and s_list) which are usually initialized on use in the pin_insert_group function. However, these members might go unmodified; in this case, the system panics when it attempts to destroy or free them. This flaw could be used to launch a denial-of-service attack.

Find out more about CVE-2015-4178 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, 7, MRG-2, realtime and arm-kernels.

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:N/I:N/A:C
Access Vector Local
Access Complexity Low
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).

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Not affected
Red Hat Enterprise Linux 7 kernel-rt Not affected
Red Hat Enterprise Linux 7 kernel Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected

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