CVE-2015-3291

It was found that if a Non-Maskable Interrupt (NMI) occurred immediately after a SYSCALL call or before a SYSRET call with the user RSP pointing to the NMI IST stack, the kernel could skip that NMI.

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6 as they did not backport the nested NMI handler functionality.

This issue does affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. This has been rated as having Low security impact and is not currently planned to be addressed in future updates.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.