It was found that the Linux kernel's TCP/IP protocol suite implementation for IPv6 allowed the Hop Limit value to be set to a smaller value than the default one. An attacker on a local network could use this flaw to prevent systems on that network from sending or receiving network packets.
Find out more about CVE-2015-2922 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel
updates for Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2 may
address this issue.
Red Hat Enterprise Linux 5 is now in Production 3 phase of the support and maintenance life cycle. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
| Base Score | 3.3 |
|---|---|
| Base Metrics | AV:A/AC:L/Au:N/C:N/I:N/A:P |
| Access Vector | Adjacent Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2015:1221 | 2015-07-14 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) | RHSA-2015:1565 | 2015-08-05 |
| Red Hat Enterprise Linux 7 (kernel) | RHSA-2015:1534 | 2015-08-06 |
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2015:1564 | 2015-08-05 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Will not fix |
Vulmon