Published: 31/08/2015 Updated: 22/12/2016

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

VMScore: 188

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

arch/x86/entry/entry_64.S in the Linux kernel prior to 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.

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Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation or denial of service CVE-2015-3290 Andy Lutomirski discovered that the Linux kernel does not properly handle nested NMIs A local, unprivileged user could use this flaw for privilege escalation CVE-2015-3291 Andy Lutomirski di ...

Several security issues were fixed in the kernel ...

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 ...

CWE-17 https://bugzilla.redhat.com/show_bug.cgi?id=1243489 http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.6 https://github.com/torvalds/linux/commit/810bc075f78ff2c221536eb3008eac6a492dba2d http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=810bc075f78ff2c221536eb3008eac6a492dba2d http://www.openwall.com/lists/oss-security/2015/07/22/7 http://www.securityfocus.com/bid/76003 http://www.ubuntu.com/usn/USN-2691-1 http://www.ubuntu.com/usn/USN-2690-1 http://www.ubuntu.com/usn/USN-2689-1 http://www.ubuntu.com/usn/USN-2688-1 http://www.ubuntu.com/usn/USN-2687-1 http://www.debian.org/security/2015/dsa-3313 https://nvd.nist.gov https://www.debian.org/security/./dsa-3313 https://usn.ubuntu.com/2690-1/https://access.redhat.com/security/cve/cve-2015-3291

CVE-2015-3291

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