CVE-2012-2127
The MITRE CVE dictionary describes this issue as:
fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
Find out more about CVE-2012-2127 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not backport the upstream commit 423e0ab0 that introduced this issue. This issue did not affect Red Hat Enteprise Linux MRG 2.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 4.6 |
|---|---|
| Base Metrics | AV:L/AC:L/Au:S/C:N/I:N/A:C |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | Single |
| 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 | Will not fix |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
| Red Hat Enterprise Linux 4 | kernel | Will not fix |
Acknowledgements
Red Hat would like to thank Vadim Ponomarev for reporting this issue.CVE description copyright © 2017, The MITRE Corporation