A flaw was found in the way the Linux kernel's vhost driver treated userspace provided log file descriptor when processing the VHOST_SET_LOG_FD ioctl command. The file descriptor was never released and continued to consume kernel memory. A privileged local user with access to the /dev/vhost-net files could use this flaw to create a denial-of-service attack.
Find out more about CVE-2015-6252 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5.
This issue has been rated as having Low impact, affects the Linux kernels as shipped with Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2 and is currently not planned to be addressed in a future updates.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 1.5 |
|---|---|
| Base Metrics | AV:L/AC:M/Au:S/C:N/I:N/A:P |
| Access Vector | Local |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix |
| Red Hat Enterprise Linux 7 | kernel | Will not fix |
| Red Hat Enterprise Linux 7 | kernel-rt | Will not fix |
| Red Hat Enterprise Linux 6 | kernel | Will not fix |
| Red Hat Enterprise Linux 5 | kernel | Not affected |
| Red Hat Enterprise Linux 4 | kernel | Not affected |
Vulmon