CVE-2015-4177
Description
A flaw was discovered in the kernel's collect_mounts function. If the kernel's audit subsystem called collect_mounts to audit an unmounted path, it could panic the system. With this flaw, an unprivileged user could call umount(MNT_DETACH) to launch a denial-of-service attack.
Statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5, 6, MRG-2, realtime and arm-kernels.
The issue is not currently planned to be addressed in Red Hat Enterprise Linux 7.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.9 | 4.9 | N/A |
| Attack Vector | Local | Local | N/A |
| Access Complexity | Low | Low | N/A |
| Authentication | None | None | N/A |
| Confidentiality Impact | Complete | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | None | Complete | N/A |
Vector
Red Hat: AV:L/AC:L/Au:N/C:C/I:N/A:N
NVD: AV:L/AC:L/Au:N/C:N/I:N/A:C
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