Linux Kernel NMI entry_64.S access control

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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been rated as problematic. This vulnerability affects unknown code of the file arch/x86/entry/entry_64.S of the component NMI Handler. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2015-3290. Moreover, an exploit is present. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (version unknown) and classified as critical. This issue affects an unknown function of the file arch/x86/entry/entry_64.S of the component NMI Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform improperly relies on espfix64 during nested NMI processing, which allows local users to gain privileges by triggering an NMI within a certain instruction window.

The weakness was disclosed 08/05/2015 by Andy Lutomirski as Bug 1243465 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2015-3290 since 04/10/2015. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

A public exploit has been developed in ANSI C and been published immediately after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 84965 (Debian DSA-3313-1 : linux - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157135 (Oracle Enterprise Linux Security Update for kernel (ELSA-2016-0185)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (105346), Exploit-DB (37722), Tenable (84965), SecurityFocus (BID 76004†) and CERT Bund (WID-SEC-2024-3050). The entries VDB-77496 and VDB-77497 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Kyocera Printer
  • RESF Rocky Linux
  • Broadcom Brocade SANnav
  • Open Source Linux Kernel
  • IBM QRadar SIEM
  • SolarWinds Security Event Manager

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.4
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84965
Nessus Name: Debian DSA-3313-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703313
OpenVAS Name: Debian Security Advisory DSA 3313-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: git.kernel.org

Timelineinfo

04/10/2015 🔍
07/22/2015 +102 days 🔍
07/23/2015 +1 days 🔍
07/24/2015 +1 days 🔍
08/05/2015 +12 days 🔍
08/05/2015 +0 days 🔍
08/07/2015 +2 days 🔍
08/31/2015 +24 days 🔍
11/19/2025 +3733 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1243465
Researcher: Andy Lutomirski
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3290 (🔍)
GCVE (CVE): GCVE-0-2015-3290
GCVE (VulDB): GCVE-100-76937

OVAL: 🔍

X-Force: 105346 - Linux Kernel NMI handler privilege escalation
SecurityFocus: 76004 - Linux Kernel 'x86/entry/entry_64.S' Local Privilege Escalation Vulnerability
CERT Bund: WID-SEC-2024-3050 - Linux Kernel: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/07/2015 10:27
Updated: 11/19/2025 04:09
Changes: 08/07/2015 10:27 (76), 09/24/2018 08:52 (7), 12/05/2024 06:10 (16), 11/19/2025 04:09 (7)
Complete: 🔍
Cache ID: 216:95D:103

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