Public Date:
798293: CVE-2012-1090 kernel: cifs: dentry refcount leak when opening a FIFO on lookup leads to panic on unmount

The MITRE CVE dictionary describes this issue as:

The cifs_lookup function in fs/cifs/dir.c in the Linux kernel before 3.2.10 allows local users to cause a denial of service (OOPS) via attempted access to a special file, as demonstrated by a FIFO.

Find out more about CVE-2012-1090 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the commit a6ce4932fbdbcd8f8e8c6df76812014351c32892 that introduced this issue. This issue did not affect the Linux kernel as shipped with Red Hat Enterprise MRG 2. This has been addressed in Red Hat Enterprise Linux 6 via

CVSS v2 metrics

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

Base Score 5.7
Base Metrics AV:A/AC:M/Au:N/C:N/I:N/A:C
Access Vector Adjacent Network
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 version 6 (kernel) RHSA-2012:0481 2012-04-17

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel Not affected
Red Hat Enterprise Linux 4 kernel Not affected