CVE-2015-1573
A flaw was found in the way the nft_flush_table() function of the Linux kernel's netfilter tables implementation flushed rules that were referencing deleted chains. A local user who has the CAP_NET_ADMIN capability could use this flaw to crash the system.
Find out more about CVE-2015-1573 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6 (as they did not include support for netfilter tables API).
This issue affects the versions of the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG 2. Future kernel updates for the respective releases may address this issue.
CVSS v2 metrics
| Base Score | 2.4 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:S/C:P/I:P/A:N |
| Access Vector | Local |
| Access Complexity | High |
| Authentication | Single |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2015:1138 | 2015-06-23 |
| Red Hat Enterprise Linux 7 (kernel) | RHSA-2015:1137 | 2015-06-23 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) | RHSA-2015:1139 | 2015-06-23 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | kernel | Will not fix |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |