CVE-2015-3291

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-08-31 · updated 2026-06-17
Weakness: CWE-17

Description

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform does not properly determine when nested NMI processing is occurring, which allows local users to cause a denial of service (skipped NMI) by modifying the rsp register, issuing a syscall instruction, and triggering an NMI.

Affected products

Linux kernel: through 4.1.5

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=810bc075f78ff2c221536eb3008eac6a492dba2d
http://www.debian.org/security/2015/dsa-3313
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.6
http://www.openwall.com/lists/oss-security/2015/07/22/7
http://www.securityfocus.com/bid/76003
http://www.ubuntu.com/usn/USN-2687-1
http://www.ubuntu.com/usn/USN-2688-1
http://www.ubuntu.com/usn/USN-2689-1
http://www.ubuntu.com/usn/USN-2690-1
http://www.ubuntu.com/usn/USN-2691-1
https://bugzilla.redhat.com/show_bug.cgi?id=1243489
https://github.com/torvalds/linux/commit/810bc075f78ff2c221536eb3008eac6a492dba2d

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