alirezaaminzadeh/secembed-pairs huggingface dataset:
Query: risk of D-Link DIR-815 devices with firmware before 2.07.B01 allow remote attackers to obtain sensitive information by leveraging cleartext storage of the wireless key.
Matching passage: CVE-2015-0153. CWE: CWE-320. CVSS: 7.5. D-Link DIR-815 devices with firmware before 2.07.B01 allow remote attackers to obtain sensitive information by leveraging cleartext storage of the wireless key.
Near-miss passage: CVE-2015-8542. CWE: CWE-320. CVSS: 8.800000190734863. An issue was discovered in Open-Xchange Guard before 2.2.0-rev8. The "getprivkeybyid" API call is used to download a PGP Private Key for a specific user after providing authentication credentials. Clients provide the "id" and "cid" parameter to specify the current user by its user- and context-ID. The "auth" parameter contains a hashed password string which gets created by the client by asking the user to enter his or her OX Guard password. This parameter is used as single point of authentication when accessing PGP Private Keys. In case a user has set the same password as another user, it is possible to download another user's PGP Private Key by iterating the "id" and "cid" parameters. This kind of attack would also be able by brute-forcing login credentials, but since the "id" and "cid" parameters are sequential they are much easier to predict than a user's login name. At the same time, there are some obvious insecure standard passwords that are widely used. A attacker could send the hashed representation of typically weak passwords and randomly fetch Private Key of matching accounts. The attack can be executed by both internal users and "guests" which use the external mail reader.
Query: vulnerability: The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service (login process crash) via vectors related to 
Matching passage: CVE-2015-3420. CWE: CWE-295. CVSS: 5.900000095367432. The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service (login process crash) via vectors related to handshake failures.
Near-miss passage: CVE-2015-0210. CWE: CWE-295. CVSS: 5.900000095367432. wpa_supplicant 2.0-16 does not properly check certificate subject name, which allows remote attackers to cause a man-in-the-middle attack.
Query: risk of FontParser in Apple iOS before 8.4.1 and OS X before 10.10.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash
Matching passage: CVE-2015-5756. CWE: CWE-119. CVSS: 6.800000190734863. FontParser in Apple iOS before 8.4.1 and OS X before 10.10.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted font file, a different vulnerability than CVE-2015-3804 and CVE-2015-5775.
Near-miss passage: CVE-2015-5590. CWE: CWE-119. CVSS: 7.300000190734863. Stack-based buffer overflow in the phar_fix_filepath function in ext/phar/phar.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large length value, as demonstrated by mishandling of an e-mail attachment by the imap PHP extension.
Query: write Sigma for Detects the execution of a renamed "jusched.exe" as seen used by the cobalt group
Matching passage: Sigma rule: Detects the execution of a renamed "jusched.exe" as seen used by the cobalt group. Logsource: windows / process_creation. Rule: title: Renamed Jusched.EXE Execution id: edd8a48c-1b9f-4ba1-83aa-490338cd1ccb status: test description: Detects the execution of a renamed "jusched.exe" as seen used by the cobalt group references: - https://www.bitdefender.com/files/News/CaseStudies/study/262/Bitdefender-WhitePaper-An-APT-Blueprint-Gaining-New-Visibility-into-Financial-Threats-interactive.pdf author: Markus Neis, Swisscom date: 2019-06-04 modified: 2023-02-03 tags: - attack.execution - attack.stealth - attack.t1036.003 logsource: category: process_creation product: windows detection: selection: Description: - Java Update Scheduler - Java(TM) Update Scheduler filter: Image|endswith: \jusched.exe condition: selection and not filter falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects execution of the "mshta" utility with an argument containing the "http" keyword, which could indicate that an at. Logsource: windows / process_creation. Rule: title: Remotely Hosted HTA File Executed Via Mshta.EXE id: b98d0db6-511d-45de-ad02-e82a98729620 status: test description: Detects execution of the "mshta" utility with an argument containing the "http" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file references: - https://www.trendmicro.com/en_us/research/22/e/avoslocker-ransomware-variant-abuses-driver-file-to-disable-anti-Virus-scans-log4shell.html author: Nasreddine Bencherchali (Nextron Systems) date: 2022-08-08 modified: 2023-02-06 tags: - attack.execution - attack.stealth - attack.t1218.005 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \mshta.exe - OriginalFileName: MSHTA.EXE selection_cli: CommandLine|contains: - http:// - https:// - ftp:// condition: all of selection_* falsepositives: - Unknown level: high
Query: patch priority for CVE-2015-3799
Matching passage: CVE-2015-3799. CWE: CWE-255. CVSS: 9.300000190734863. The Apple ID OD plug-in in Apple OS X before 10.10.5 allows attackers to change arbitrary user passwords via a crafted app.
Near-miss passage: CVE-2015-7283. CWE: CWE-255. CVSS: 8.100000381469727. The web administration interface on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 has a default password of 1234 for the admin account, which allows remote attackers to obtain administrative privileges by leveraging a LAN session.
Query: risk of FastBack Mount in IBM Tivoli Storage Manager FastBack 6.1.x before 6.1.11.1 allows remote attackers to execute arbitrary code by connecting to the Mount port.
Matching passage: CVE-2015-0119. CWE: CWE-284. CVSS: 7.5. FastBack Mount in IBM Tivoli Storage Manager FastBack 6.1.x before 6.1.11.1 allows remote attackers to execute arbitrary code by connecting to the Mount port.
Near-miss passage: CVE-2015-9021. CWE: CWE-284. CVSS: 5.5. In all Android releases from CAF using the Linux kernel, access control to SMEM memory was not enabled.
Query: CVE similar to CVE-2015-4338
Matching passage: CVE-2015-4338. CWE: CWE-94. CVSS: 6.5. Static code injection vulnerability in the XCloner plugin 3.1.2 for WordPress allows remote authenticated users to inject arbitrary PHP code into the language files via a Translation LM_FRONT_* field for a language, as demonstrated by language/italian.php.
Near-miss passage: CVE-2015-0088. CWE: CWE-94. CVSS: 9.300000190734863. Adobe Font Driver in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code via a crafted (1) web site or (2) file, aka "Adobe Font Driver Remote Code Execution Vulnerability," a different vulnerability than CVE-2015-0090, CVE-2015-0091, CVE-2015-0092, and CVE-2015-0093.
Query: Sigma rule for Detects exploitation attempt using the JNDI-Exploit-Kit
Matching passage: Sigma rule: Detects exploitation attempt using the JNDI-Exploit-Kit. Logsource: webserver. Rule: title: JNDIExploit Pattern id: 412d55bc-7737-4d25-9542-5b396867ce55 status: test description: Detects exploitation attempt using the JNDI-Exploit-Kit references: - https://github.com/pimps/JNDI-Exploit-Kit - https://web.archive.org/web/20231015205935/https://githubmemory.com/repo/FunctFan/JNDIExploit author: Florian Roth (Nextron Systems) date: 2021-12-12 modified: 2022-12-25 tags: - attack.initial-access - attack.t1190 logsource: category: webserver detection: keywords: - /Basic/Command/Base64/ - /Basic/ReverseShell/ - /Basic/TomcatMemshell - /Basic/JettyMemshell - /Basic/WeblogicMemshell - /Basic/JBossMemshell - /Basic/WebsphereMemshell - /Basic/SpringMemshell - /Deserialization/URLDNS/ - /Deserialization/CommonsCollections1/Dnslog/ - /Deserialization/CommonsCollections2/Command/Base64/ - /Deserialization/CommonsBeanutils1/ReverseShell/ - /Deserialization/Jre8u20/TomcatMemshell - /TomcatBypass/Dnslog/ - /TomcatBypass/Command/ - /TomcatBypass/ReverseShell/ - /TomcatBypass/TomcatMemshell - /TomcatBypass/SpringMemshell - /GroovyBypass/Command/ - /WebsphereBypass/Upload/ condition: keywords falsepositives: - Legitimate apps the use these paths level: high
Near-miss passage: Sigma rule: Detects a possible persistence mechanism using RUN key for Windows Explorer and pointing to a suspicious folder. Logsource: windows / registry_set. Rule: title: Registry Persistence via Explorer Run Key id: b7916c2a-fa2f-4795-9477-32b731f70f11 status: test description: Detects a possible persistence mechanism using RUN key for Windows Explorer and pointing to a suspicious folder references: - https://researchcenter.paloaltonetworks.com/2018/07/unit42-upatre-continues-evolve-new-anti-analysis-techniques/ author: Florian Roth (Nextron Systems), oscd.community date: 2018-07-18 modified: 2023-12-11 tags: - attack.privilege-escalation - attack.persistence - attack.t1547.001 logsource: category: registry_set product: windows detection: selection: TargetObject|endswith: \Microsoft\Windows\CurrentVersion\Policies\Explorer\Run Details|contains: - :\$Recycle.bin\ - :\ProgramData\ - :\Temp\ - :\Users\Default\ - :\Users\Public\ - :\Windows\Temp\ - \AppData\Local\Temp\ condition: selection falsepositives: - Unknown level: high
Query: detection rule: Executes arbitrary PowerShell code using SyncAppvPublishingServer.exe.
Matching passage: Sigma rule: Executes arbitrary PowerShell code using SyncAppvPublishingServer.exe.. Logsource: windows / process_creation. Rule: title: SyncAppvPublishingServer Execute Arbitrary PowerShell Code id: fbd7c32d-db2a-4418-b92c-566eb8911133 related: - id: fde7929d-8beb-4a4c-b922-be9974671667 type: obsolete status: test description: Executes arbitrary PowerShell code using SyncAppvPublishingServer.exe. references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md - https://lolbas-project.github.io/lolbas/Binaries/Syncappvpublishingserver/ author: frack113 date: 2021-07-12 modified: 2022-10-04 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \SyncAppvPublishingServer.exe - OriginalFileName: syncappvpublishingserver.exe selection_cli: CommandLine|contains: '"n; ' condition: all of selection_* falsepositives: - App-V clients level: medium
Near-miss passage: Sigma rule: Detects execution of "Tpmvscmgr.exe" to create a new virtual smart card.. Logsource: windows / process_creation. Rule: title: New Virtual Smart Card Created Via TpmVscMgr.EXE id: c633622e-cab9-4eaa-bb13-66a1d68b3e47 status: test description: Detects execution of "Tpmvscmgr.exe" to create a new virtual smart card. references: - https://learn.microsoft.com/en-us/windows/security/identity-protection/virtual-smart-cards/virtual-smart-card-tpmvscmgr author: Nasreddine Bencherchali (Nextron Systems) date: 2023-06-15 tags: - attack.execution logsource: category: process_creation product: windows detection: selection_img: Image|endswith: \tpmvscmgr.exe OriginalFileName: TpmVscMgr.exe selection_cli: CommandLine|contains: create condition: all of selection_* falsepositives: - Legitimate usage by an administrator level: medium
Query: exploit Cross-site request forgery (CSRF) vulnerability in Cisco Data Center Analytics Framework (DCAF) 1.4 allows remote attackers to hijack the authentication of arbitrary users, aka Bug
Matching passage: CVE-2015-4189. CWE: CWE-352. CVSS: 6.800000190734863. Cross-site request forgery (CSRF) vulnerability in Cisco Data Center Analytics Framework (DCAF) 1.4 allows remote attackers to hijack the authentication of arbitrary users, aka Bug ID CSCun26807.
Near-miss passage: CVE-2015-3367. CWE: CWE-352. CVSS: 6.800000190734863. Multiple cross-site request forgery (CSRF) vulnerabilities in the Patterns module before 7.x-2.2 for Drupal allow remote attackers to hijack the authentication of administrators for requests that (1) restore, (2) publish, or (3) unpublish a pattern via unspecified vectors.
Query: describe CVE-2015-2636
Matching passage: CVE-2015-2636. CWE: UNKNOWN. CVSS: 7.5. Unspecified vulnerability in the Oracle Data Integrator component in Oracle Fusion Middleware 11.1.1.3.0 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Data Quality based on Trillium, a different vulnerability than CVE-2015-0443, CVE-2015-0444, CVE-2015-0445, CVE-2015-0446, CVE-2015-2634, CVE-2015-2635, CVE-2015-4758, and CVE-2015-4759.
Near-miss passage: CVE-2015-1249. CWE: UNKNOWN. CVSS: 7.5. Multiple unspecified vulnerabilities in Google Chrome before 42.0.2311.90 allow attackers to cause a denial of service or possibly have other impact via unknown vectors.
Query: patch priority for CVE-2015-7647
Matching passage: CVE-2015-7647. CWE: UNKNOWN. CVSS: 10.0. Adobe Flash Player before 18.0.0.255 and 19.x before 19.0.0.226 on Windows and OS X and before 11.2.202.540 on Linux allows attackers to execute arbitrary code by leveraging an unspecified "type confusion," a different vulnerability than CVE-2015-7648.
Near-miss passage: CVE-2015-4477. CWE: UNKNOWN. CVSS: 10.0. Use-after-free vulnerability in the MediaStream playback feature in Mozilla Firefox before 40.0 allows remote attackers to execute arbitrary code via unspecified use of the Web Audio API.
Query: detection rule: Detects potential DLL side-loading of jli.dll. JLI.dll has been observed being side-loaded by Java processes by various
Matching passage: Sigma rule: Detects potential DLL side-loading of jli.dll. JLI.dll has been observed being side-loaded by Java processes by various. Logsource: windows / image_load. Rule: title: Potential JLI.dll Side-Loading id: 7a3b6d1f-4a2b-4f8c-9d7e-e9f8cbf21a35 status: experimental description: 'Detects potential DLL side-loading of jli.dll. JLI.dll has been observed being side-loaded by Java processes by various threat actors, including APT41, XWorm, and others in order to load malicious payloads in context of legitimate Java processes. ' references: - https://securelist.com/apt41-in-africa/116986/ - https://lab52.io/blog/snake-keylogger-in-geopolitical-affairs-abuse-of-trusted-java-utilities-in-cybercrime-operations/ - https://hijacklibs.net/entries/3rd_party/oracle/jli.html - https://www.proofpoint.com/us/blog/threat-insight/phish-china-aligned-espionage-actors-ramp-up-taiwan-semiconductor-targeting author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-07-25 modified: 2025-10-06 tags: - attack.persistence - attack.privilege-escalation - attack.execution - attack.stealth - attack.t1574.001 logsource: category: image_load product: windows detection: selection: ImageLoaded|endswith: \jli.dll filter_main_legitimate_install_paths: ImageLoaded|startswith: - C:\Program Files\ - C:\Program Files (x86)\ Description: OpenJDK Platform binary OriginalFileName: jli.dll Product|startswith: OpenJDK Platform Signed: 'true' filter_optional_eclipse: ImageLoaded|startswith: C:\eclipse\plugins\ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Uses the .NET InstallUtil.exe application in order to execute image without log. Logsource: windows / process_creation. Rule: title: Suspicious Execution of InstallUtil Without Log id: d042284c-a296-4988-9be5-f424fadcc28c status: test description: Uses the .NET InstallUtil.exe application in order to execute image without log references: - https://securelist.com/moonbounce-the-dark-side-of-uefi-firmware/105468/ - https://learn.microsoft.com/en-us/dotnet/framework/tools/installutil-exe-installer-tool author: frack113 date: 2022-01-23 modified: 2022-02-04 tags: - attack.stealth logsource: category: process_creation product: windows detection: selection: Image|endswith: \InstallUtil.exe Image|contains: Microsoft.NET\Framework CommandLine|contains|all: - '/logfile= ' - /LogToConsole=false condition: selection falsepositives: - Unknown level: medium
Query: CVE similar to CVE-2015-2066
Matching passage: CVE-2015-2066. CWE: CWE-89. CVSS: 7.5. SQL injection vulnerability in DLGuard 4.5 allows remote attackers to execute arbitrary SQL commands via the c parameter to index.php.
Near-miss passage: CVE-2015-9325. CWE: CWE-89. CVSS: 9.800000190734863. The visitors-online plugin before 0.4 for WordPress has SQL injection.
Query: vulnerability: Cisco NX-OS 6.1(2)I3(4) and 7.0(3)I1(1) on Nexus 9000 (N9K) devices allows remote attackers to cause a denial of service (CPU consumption or control-plane instability) or trigger u
Matching passage: CVE-2015-6295. CWE: CWE-399. CVSS: 4.800000190734863. Cisco NX-OS 6.1(2)I3(4) and 7.0(3)I1(1) on Nexus 9000 (N9K) devices allows remote attackers to cause a denial of service (CPU consumption or control-plane instability) or trigger unintended traffic forwarding via a Layer 2 packet with a reserved VLAN number, aka Bug ID CSCuw13560.
Near-miss passage: CVE-2015-0593. CWE: CWE-399. CVSS: 7.099999904632568. The Zone-Based Firewall implementation in Cisco IOS 12.4(122)T and earlier does not properly manage session-object structures, which allows remote attackers to cause a denial of service (device reload) via crafted network traffic, aka Bug ID CSCul65003.
Query: Sigma YAML for zeek / smb_files
Matching passage: Sigma rule: Detects known sensitive file extensions via Zeek. Logsource: zeek / smb_files. Rule: title: Suspicious Access to Sensitive File Extensions - Zeek id: 286b47ed-f6fe-40b3-b3a8-35129acd43bc related: - id: 91c945bc-2ad1-4799-a591-4d00198a1215 type: derived status: test description: Detects known sensitive file extensions via Zeek references: - Internal Research author: Samir Bousseaden, @neu5ron date: 2020-04-02 modified: 2025-10-17 tags: - attack.collection logsource: product: zeek service: smb_files detection: selection: name|endswith: - .pst - .ost - .msg - .nst - .oab - .edb - .nsf - .bak - .dmp - .kirbi - .rdp condition: selection falsepositives: - Help Desk operator doing backup or re-imaging end user machine or backup software - Users working with these data types or exchanging message files level: medium
Near-miss passage: Sigma rule: Monitor and alert for sign-ins where the device was non-compliant.. Logsource: azure / signinlogs. Rule: title: Sign-ins from Non-Compliant Devices id: 4f77e1d7-3982-4ee0-8489-abf2d6b75284 status: test description: Monitor and alert for sign-ins where the device was non-compliant. references: - https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#non-compliant-device-sign-in author: Michael Epping, '@mepples21' date: 2022-06-28 tags: - attack.privilege-escalation - attack.persistence - attack.initial-access - attack.stealth - attack.t1078.004 logsource: product: azure service: signinlogs detection: selection: DeviceDetail.isCompliant: 'false' condition: selection falsepositives: - Unknown level: high
Query: describe CVE-2015-3313
Matching passage: CVE-2015-3313. CWE: CWE-89. CVSS: 9.800000190734863. SQL injection vulnerability in WordPress Community Events plugin before 1.4.
Near-miss passage: CVE-2015-1479. CWE: CWE-89. CVSS: 6.5. SQL injection vulnerability in reports/CreateReportTable.jsp in ZOHO ManageEngine ServiceDesk Plus (SDP) before 9.0 build 9031 allows remote authenticated users to execute arbitrary SQL commands via the site parameter.
Query: patch priority for CVE-2015-7215
Matching passage: CVE-2015-7215. CWE: CWE-200. CVSS: 5.0. The importScripts function in the Web Workers API implementation in Mozilla Firefox before 43.0 allows remote attackers to bypass the Same Origin Policy by triggering use of the no-cors mode in the fetch API to attempt resource access that throws an exception, leading to information disclosure after a rethrow.
Near-miss passage: CVE-2015-5831. CWE: CWE-200. CVSS: 5.0. NetworkExtension in the kernel in Apple iOS before 9 does not properly initialize an unspecified data structure, which allows attackers to obtain sensitive memory-layout information via a crafted app.
Query: what is T1675
Matching passage: T1675 ESXi Administration Command. Tactics: execution. Description: Adversaries may abuse ESXi administration services to execute commands on guest machines hosted within an ESXi virtual environment. Persistent background services on ESXi-hosted VMs, such as the VMware Tools Daemon Service, allow for remote management from the ESXi server. The tools daemon service runs as `vmtoolsd.exe` on Windows guest operating systems, `vmware-tools-daemon` on macOS, and `vmtoolsd ` on Linux.(Citation: Broadcom VMware Tools Services) Adversaries may leverage a variety of tools to execute commands on ESXi-hosted VMs – for example, by using the vSphere Web Services SDK to programmatically execute commands and scripts via APIs such as `StartProgramInGuest`, `ListProcessesInGuest`, `ListFileInGuest`, and `InitiateFileTransferFromGuest`.(Citation: Google Cloud Threat Intelligence VMWare ESXi Zero-Day 2023)(Citation: Broadcom Running Guest OS Operations) This may enable follow-on behaviors on the guest VMs, such as [File and Directory Discovery](https://attack.mitre.org/techniques/T1083), [Data from Local System](https://attack.mitre.org/techniques/T1005), or [OS Credential Dumping](https://attack.mitre.org/techniques/T1003).
Near-miss passage: T1569.003 Systemctl. Tactics: execution. Description: Adversaries may abuse systemctl to execute commands or programs. Systemctl is the primary interface for systemd, the Linux init system and service manager. Typically invoked from a shell, Systemctl can also be integrated into scripts or applications. Adversaries may use systemctl to execute commands or programs as [Systemd Service](https://attack.mitre.org/techniques/T1543/002)s. Common subcommands include: `systemctl start`, `systemctl stop`, `systemctl enable`, `systemctl disable`, and `systemctl status`.(Citation: Red Hat Systemctl 2022)
Query: exploit Open redirect vulnerability in the Console in Puppet Enterprise before 2015.2.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via th
Matching passage: CVE-2015-6501. CWE: CWE-601. CVSS: 6.099999904632568. Open redirect vulnerability in the Console in Puppet Enterprise before 2015.2.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via the string parameter.
Near-miss passage: CVE-2015-10052. CWE: CWE-601. CVSS: 6.099999904632568. ** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as problematic, was found in calesanz gibb-modul-151. This affects the function bearbeiten/login. The manipulation leads to open redirect. It is possible to initiate the attack remotely. The patch is named 88a517dc19443081210c804b655e72770727540d. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-218379. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Query: patch priority for CVE-2015-0313
Matching passage: CVE-2015-0313. CWE: CWE-416. CVSS: 9.800000190734863. Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows and OS X and before 11.2.202.442 on Linux allows remote attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in February 2015, a different vulnerability than CVE-2015-0315, CVE-2015-0320, and CVE-2015-0322.
Near-miss passage: CVE-2015-5706. CWE: CWE-416. CVSS: 4.599999904632568. Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to cause a denial of service or possibly have unspecified other impact via O_TMPFILE filesystem operations that leverage a duplicate cleanup operation.