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Vulnerability Details : CVE-2017-15126

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().
Publish Date : 2018-01-14 Last Update Date : 2018-05-06
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- CVSS Scores & Vulnerability Types

CVSS Score
9.3
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 416

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2018:0676: kernel-rt security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20180676 unix
RHSA-2018:1062: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20181062 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2017-15126

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 4.13.6 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2017-15126

https://access.redhat.com/errata/RHSA-2018:1062
REDHAT RHSA-2018:1062
https://access.redhat.com/errata/RHSA-2018:0676
REDHAT RHSA-2018:0676
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252
https://access.redhat.com/security/cve/CVE-2017-15126
https://bugzilla.redhat.com/show_bug.cgi?id=1523481
http://www.securityfocus.com/bid/102516
BID 102516 Linux Kernel 'fs/userfaultfd.c' Local Use After Free Memory Corruption Vulnerability Release Date:2018-05-05

- Metasploit Modules Related To CVE-2017-15126

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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