CVE-2014-7826
An out-of-bounds memory access flaw, CVE-2014-7825, was found in the syscall tracing functionality of the Linux kernel's perf subsystem. A local, unprivileged user could use this flaw to crash the system. Additionally, an out-of-bounds memory access flaw, CVE-2014-7826, was found in the syscall tracing functionality of the Linux kernel's ftrace subsystem. On a system with ftrace syscall tracing enabled, a local, unprivileged user could use this flaw to crash the system, or escalate their privileges.
Find out more about CVE-2014-7826 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue does not affect the Linux kernel packages as shipped with Red Hat
Enterprise Linux 5.
This issue does affect the Linux kernel packages as shipped with Red Hat
Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for
the respective releases may address this issue.
Note that the impact on Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise
MRG 2 is limited to local denial of service. Privilege escalation is not
possible.
CVSS v2 metrics
| Base Score | 4 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:N/C:N/I:N/A:C |
| Access Vector | Local |
| Access Complexity | High |
| 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 7 (kernel) | RHSA-2015:0290 | 2015-03-05 |
| Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) | RHSA-2014:1943 | 2014-12-02 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix |
| Red Hat Enterprise Linux 5 | kernel | Not affected |