CVE-2015-1421
A use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system.
Find out more about CVE-2015-1421 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future Linux kernel updates for the respective releases may address this issue.
CVSS v2 metrics
| Base Score | 7.1 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:N/A:C |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2015:0864 | 2015-04-21 |
| Red Hat Enterprise Linux Advanced Update Support 6.2 (kernel) | RHSA-2015:1082 | 2015-06-09 |
| Red Hat Enterprise Linux Advanced Update Support 6.4 (kernel) | RHSA-2015:1030 | 2015-05-27 |
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2015:0751 | 2015-03-30 |
| Red Hat Enterprise Linux Extended Update Support 6.5 (kernel) | RHSA-2015:0782 | 2015-04-07 |
| Red Hat Enterprise Linux 7 (kernel) | RHSA-2015:0726 | 2015-03-26 |
| Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) | RHSA-2015:0727 | 2015-03-26 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected |
| Red Hat Enterprise Linux 5 | kernel | Not affected |