A flaw was found in the way the Linux kernel's perf subsystem retrieved userlevel stack traces on PowerPC systems. A local, unprivileged user could use this flaw to cause a denial of service on the system by creating a special stack layout that would force the perf_callchain_user_64() function into an infinite loop.
Find out more about CVE-2015-6526 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, 6 and Red Hat Enterprise MRG 2.
This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 7 and may be addressed in a future update.
Base Score | 4.9 |
---|---|
Base Metrics | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Access Vector | Local |
Access Complexity | Low |
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).
Platform | Errata | Release Date |
---|---|---|
Red Hat Enterprise Linux 7 (kernel) | RHSA-2015:2152 | 2015-11-19 |
Platform | Package | State |
---|---|---|
Red Hat Enterprise MRG 2 | realtime-kernel | Not affected |
Red Hat Enterprise Linux 7 | kernel-rt | Not affected |
Red Hat Enterprise Linux 6 | kernel | Not affected |
Red Hat Enterprise Linux 5 | kernel | Not affected |
Red Hat Enterprise Linux 4 | kernel | Not affected |