You are viewing this page in an unauthorized frame window.
This is a potential security issue, you are being redirected to
https://nvd.nist.gov
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
NIST is currently working to establish a consortium to address challenges in the NVD
program and develop improved tools and methods. You will temporarily see delays in analysis efforts
during this transition. We apologize for the inconvenience and ask for your patience as we
work to improve the NVD program.
CVE-2017-15126
Detail
Description
A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to nvd@nist.gov.
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.11 up to (excluding) 4.13.6
*cpe:2.3:o:linux:linux_kernel:4.13.6:*:*:*:*:*:*:*
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.11 up to (excluding) 4.13.6
CVE Modified by Red Hat, Inc.2/12/2023 6:28:50 PM
Action
Type
Old Value
New Value
Removed
CVSS V3
Red Hat, Inc. AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CWE
Red Hat, Inc. CWE-119
Changed
Description
A flaw was found in the Linux kernel's handling of fork failure when dealing with event messages in the userfaultfd code. Failure to fork correctly can create a fork event that will be removed from an already freed list of events.
A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().
CVE Modified by Red Hat, Inc.2/02/2023 10:17:19 AM
Action
Type
Old Value
New Value
Added
CVSS V3
Red Hat, Inc. AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Removed
CWE
Red Hat, Inc. CWE-119
Removed
CWE Reason
CWE-119 / Assessment performed prior to CVMAP efforts
Changed
Description
A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().
A flaw was found in the Linux kernel's handling of fork failure when dealing with event messages in the userfaultfd code. Failure to fork correctly can create a fork event that will be removed from an already freed list of events.
Modified Analysis by NIST1/19/2023 11:08:07 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:4.13.6:*:*:*:*:*:*:*
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.11 up to (excluding) 4.13.6
*cpe:2.3:o:linux:linux_kernel:4.13.6:*:*:*:*:*:*:*
Removed
CVSS V3
NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V3.1
NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Changed
Reference Type
http://www.securityfocus.com/bid/102516 No Types Assigned
http://www.securityfocus.com/bid/102516 Third Party Advisory, VDB Entry
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2018:0676 No Types Assigned
https://access.redhat.com/errata/RHSA-2018:0676 Third Party Advisory
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2018:1062 No Types Assigned
https://access.redhat.com/errata/RHSA-2018:1062 Third Party Advisory
CVE Modified by Red Hat, Inc.10/09/2019 7:24:15 PM